adding python 3.12 to tests

.github/workflows/tests.yml

@@ -15,7 +15,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["windows-latest", "ubuntu-latest", "macos-latest"]
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
         exclude:
           # Python 3.11 build on macOS times out for some reason
           # xref https://github.com/coiled/dask-snowflake/pull/56

ci/environment-3.12.yaml

@@ -0,0 +1,18 @@
+name: test-environment
+channels:
+  - conda-forge
+dependencies:
+  # Required
+  - python=3.12
+  - dask
+  - distributed
+  # `pandas=2.2` dropped support for `sqlalchemy<2`, but `snowflake-sqlalchemy`
+  # doesn't support `sqlalchemy>=2` yet. Temporarily pinning `pandas<2.2` for now.
+  # xref https://github.com/pandas-dev/pandas/issues/57049
+  # xref https://github.com/snowflakedb/snowflake-sqlalchemy/issues/380
+  - pandas<2.2
+  - pyarrow
+  - snowflake-connector-python >=2.6.0
+  - snowflake-sqlalchemy
+  # Testing
+  - pytest