Bump the requirements group with 2 updates (zarr-developers#2303)

Bumps the requirements group with 2 updates: [numpy](https://github.com/numpy/numpy) and [redis](https://github.com/redis/redis-py).


Updates `numpy` from 2.1.1 to 2.1.2
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](numpy/numpy@v2.1.1...v2.1.2)

Updates `redis` from 5.1.0 to 5.1.1
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v5.1.0...v5.1.1)

---
updated-dependencies:
- dependency-name: numpy
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: requirements
- dependency-name: redis
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: requirements
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements_dev_numpy.txt

@@ -1,4 +1,4 @@
 # Break this out into a separate file to allow testing against
 # different versions of numpy. This file should pin to the latest
 # numpy version.
-numpy==2.1.1
+numpy==2.1.2

requirements_dev_optional.txt

@@ -8,7 +8,7 @@ ipywidgets==8.1.5
 # don't let pyup change pinning for azure-storage-blob, need to pin to older
 # version to get compatibility with azure storage emulator on appveyor (FIXME)
 azure-storage-blob==12.21.0 # pyup: ignore
-redis==5.1.0
+redis==5.1.1
 types-redis
 types-setuptools
 pymongo==4.10.1