feat: Bump dbt-core upper bound for 1.10.latest, and target CI dbt deps branches with python 3.9 support (#1258)

### Description

- Bumps dbt-core upper bound to allow for `dbt-core 1.10.15`
- Changes the target branches of dbt deps in CI to target branches
containing support for python 3.9

### Checklist

- [X] I have run this code in development and it appears to resolve the
stated issue
- [X] This PR includes tests, or tests are not required/relevant for
this PR
- [X] I have updated the `CHANGELOG.md` and added information about my
change to the "dbt-databricks next" section.

Author: QMalcolm

.github/workflows/integration.yml

@@ -146,7 +146,8 @@ jobs:
     if: github.event_name == 'workflow_dispatch' || github.event.pull_request.head.repo.full_name == github.repository
     env:
       DBT_DATABRICKS_HOST_NAME: ${{ secrets.DATABRICKS_HOST }}
-      DBT_DATABRICKS_TOKEN: ${{ secrets.DATABRICKS_TOKEN }}
+      DBT_DATABRICKS_CLIENT_ID: ${{ secrets.TEST_PECO_SP_ID }}
+      DBT_DATABRICKS_CLIENT_SECRET: ${{ secrets.TEST_PECO_SP_SECRET }}
       TEST_PECO_CLUSTER_ID: ${{ secrets.TEST_PECO_CLUSTER_ID }}
       DBT_DATABRICKS_LOCATION_ROOT: ${{ secrets.TEST_PECO_EXTERNAL_LOCATION }}test
     steps:

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## dbt-databricks 1.10.15 (TBD)
 
+### Under the hood
+
+- Allow for dbt-core 1.10.15 ([1254](https://github.com/databricks/dbt-databricks/pull/1254))
+
 ## dbt-databricks 1.10.14 (October 22, 2025)
 
 ### Under the hood

pyproject.toml

@@ -26,7 +26,7 @@ dependencies = [
     "databricks-sql-connector[pyarrow]>=4.0.0, <4.0.6",
     "dbt-adapters>=1.16.0, <1.17.4",
     "dbt-common>=1.24.0, <1.34.0",
-    "dbt-core>=1.10.1, <1.10.14",
+    "dbt-core>=1.10.1, <1.10.16",
     "dbt-spark>=1.9.0, <1.9.4",
     "keyring>=23.13.0",
     "pydantic>=1.10.0",
@@ -64,13 +64,13 @@ check-sdist = [
 
 [tool.hatch.envs.default]
 pre-install-commands = [
-    "pip install git+https://github.com/dbt-labs/dbt-common.git",
-    "pip install git+https://github.com/dbt-labs/dbt-adapters.git@main#subdirectory=dbt-adapters",
-    "pip install git+https://github.com/dbt-labs/dbt-adapters.git@main#subdirectory=dbt-tests-adapter",
-    "pip install git+https://github.com/dbt-labs/dbt-core.git@main#subdirectory=core",
+    "pip install git+https://github.com/dbt-labs/dbt-common.git@1.34.latest",
+    "pip install git+https://github.com/dbt-labs/dbt-adapters.git@dbt-adapters-1.17.latest#subdirectory=dbt-adapters",
+    "pip install git+https://github.com/dbt-labs/dbt-adapters.git@dbt-adapters-1.17.latest#subdirectory=dbt-tests-adapter",
+    "pip install git+https://github.com/dbt-labs/dbt-core.git@1.10.latest#subdirectory=core",
 ]
 dependencies = [
-    "dbt-spark @ git+https://github.com/dbt-labs/dbt-adapters.git#subdirectory=dbt-spark",
+    "dbt-spark @ git+https://github.com/dbt-labs/dbt-adapters.git@dbt-adapters-1.17.latest#subdirectory=dbt-spark",
     "pytest",
     "pytest-xdist",
     "pytest-dotenv",