fix: relax NumPy version constraint

[wuodar]

I'm integrating my langchain app into pipecat pipeline for voice agents. I noticed after migration to langchain v1, that pipecat have some strict constraints on numpy and therefore I can't really use it now.

❯ uv sync --prerelease=allow
  × No solution found when resolving dependencies:
  ╰─▶ Because only workbots==0.1.0 is available and workbots==0.1.0 depends on langchain-aws>=1.0.0, we can conclude that all versions of workbots depend on langchain-aws>=1.0.0.
      And because only langchain-aws<=1.0.0 is available, we can conclude that all versions of workbots depend on langchain-aws==1.0.0. (1)

      Because only the following versions of numpy are available:
          numpy<=2.3.2
          numpy==2.3.3
          numpy==2.3.4
          numpy==2.3.5
      and langchain-aws==1.0.0 depends on numpy>=2.3.2, we can conclude that langchain-aws==1.0.0 depends on numpy>=2.3.2.
      And because we know from (1) that all versions of workbots depend on langchain-aws==1.0.0, we can conclude that all versions of workbots depend on numpy>=2.3.2.
      And because numba==0.61.2 depends on numpy>=1.24,<2.3 and pipecat-ai==0.0.95 depends on numba==0.61.2, we can conclude that pipecat-ai==0.0.95 and all versions of workbots are incompatible.
      And because your project depends on pipecat-ai[websockets-base]==0.0.95 and workbots, we can conclude that your project's requirements are unsatisfiable.

[wuodar]

Local tests output:

❯ uv run python --version
Python 3.13.2
❯ make test
env -u AWS_ACCESS_KEY_ID -u AWS_SECRET_ACCESS_KEY -u AWS_SESSION_TOKEN -u BEDROCK_AWS_ACCESS_KEY_ID -u BEDROCK_AWS_SECRET_ACCESS_KEY uv run --group test pytest --disable-socket --allow-unix-socket tests/unit_tests/
Installed 36 packages in 209ms
=============================================================================================================================================================================== test session starts ================================================================================================================================================================================
platform darwin -- Python 3.13.2, pytest-8.4.2, pluggy-1.6.0
codspeed: 4.2.0b0 (disabled, mode: walltime, callgraph: not supported, timer_resolution: 41.7ns)
benchmark: 5.1.0 (defaults: timer=time.perf_counter disable_gc=False min_rounds=5 min_time=0.000005 max_time=1.0 calibration_precision=10 warmup=False warmup_iterations=100000)
rootdir: /Users/kacperwlodarczyk/dev/contributions/langchain-aws/libs/aws
configfile: pyproject.toml
plugins: recording-0.13.4, codspeed-4.2.0b0, anyio-4.11.0, syrupy-4.9.1, socket-0.7.0, langsmith-0.4.37, benchmark-5.1.0, asyncio-0.26.0, cov-7.0.0
asyncio: mode=Mode.AUTO, asyncio_default_fixture_loop_scope=None, asyncio_default_test_loop_scope=function
collected 345 items                                                                                                                                                                                                                                                                                                                                                                

tests/unit_tests/agents/test_bedrock_agents.py ........                                                                                                                                                                                                                                                                                                                      [  2%]
tests/unit_tests/agents/test_utils.py ...                                                                                                                                                                                                                                                                                                                                    [  3%]
tests/unit_tests/chat_models/test_bedrock.py .............................................................                                                                                                                                                                                                                                                                   [ 20%]
tests/unit_tests/chat_models/test_bedrock_converse.py .........X.......................................................................................................                                                                                                                                                                                                      [ 53%]
tests/unit_tests/chat_models/test_sagemaker_endpoint.py ..                                                                                                                                                                                                                                                                                                                   [ 54%]
tests/unit_tests/document_compressors/test_rerank.py ...                                                                                                                                                                                                                                                                                                                     [ 55%]
tests/unit_tests/embeddings/test_bedrock_cohere.py ........                                                                                                                                                                                                                                                                                                                  [ 57%]
tests/unit_tests/llms/test_bedrock.py .......................                                                                                                                                                                                                                                                                                                                [ 64%]
tests/unit_tests/retrievers/test_bedrock.py ............................................                                                                                                                                                                                                                                                                                     [ 76%]
tests/unit_tests/retrievers/test_s3_vectors.py .                                                                                                                                                                                                                                                                                                                             [ 77%]
tests/unit_tests/test_imports.py .                                                                                                                                                                                                                                                                                                                                           [ 77%]
tests/unit_tests/test_standard.py ....................                                                                                                                                                                                                                                                                                                                       [ 83%]
tests/unit_tests/test_utils.py ................................                                                                                                                                                                                                                                                                                                              [ 92%]
tests/unit_tests/vectorstores/test_s3_vectors.py ..........................                                                                                                                                                                                                                                                                                                  [100%]

================================================================================================================================================================================= warnings summary =================================================================================================================================================================================
tests/unit_tests/chat_models/test_bedrock_converse.py::TestBedrockStandard::test_init_streaming
  /Users/kacperwlodarczyk/dev/contributions/langchain-aws/libs/aws/.venv/lib/python3.13/site-packages/_pytest/python.py:157: UserWarning: WARNING! streaming is not default parameter.
                  streaming was transferred to model_kwargs.
                  Please confirm that streaming is what you intended.
    result = testfunction(**testargs)

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html

------------------------------------------------------------------------------------------ benchmark: 3 tests -----------------------------------------------------------------------------------------
Name (time in us)          Min                    Max                  Mean                StdDev              Median                 IQR            Outliers         OPS            Rounds  Iterations
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
test_init_time        458.7080 (1.0)       4,492.9580 (1.31)       560.7510 (1.0)        292.8502 (1.0)      475.0210 (1.0)       71.8545 (1.0)         41;93  1,783.3228 (1.0)         804           1
test_init_time        722.7090 (1.58)      3,422.6670 (1.0)      1,103.6975 (1.97)       509.4204 (1.74)     897.6460 (1.89)     399.4990 (5.56)        33;26    906.0454 (0.51)        222           1
test_init_time        725.1250 (1.58)     68,671.0420 (20.06)    1,317.2983 (2.35)     4,115.2983 (14.05)    821.6670 (1.73)     260.1870 (3.62)         1;38    759.1295 (0.43)        277           1
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Legend:
  Outliers: 1 Standard Deviation from Mean; 1.5 IQR (InterQuartile Range) from 1st Quartile and 3rd Quartile.
  OPS: Operations Per Second, computed as 1 / Mean
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- snapshot report summary ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
3 snapshots passed.
=============================================================================================================================================================================== slowest 5 durations ================================================================================================================================================================================
1.45s call     tests/unit_tests/chat_models/test_bedrock_converse.py::TestBedrockStandard::test_init_time
0.37s call     tests/unit_tests/test_standard.py::TestBedrockStandard::test_init_time
0.25s call     tests/unit_tests/test_standard.py::TestBedrockAsConverseStandard::test_init_time
0.06s setup    tests/unit_tests/chat_models/test_bedrock_converse.py::test__messages_to_bedrock_appends_system_prompt_from_parameter[system_prompt_parameter1-expected_system1]
0.06s setup    tests/unit_tests/chat_models/test_bedrock.py::test__get_provider[us.anthropic.claude-3-7-sonnet-20250219-v1:0-None-anthropic-expectation6-us-west-2]
==================================================================================================================================================================== 344 passed, 1 xpassed, 1 warning in 4.83s =====================================================================================================================================================================