Build: Bump polars from 1.37.1 to 1.40.1

Bumps [polars](https://github.com/pola-rs/polars) from 1.37.1 to 1.40.1.
- [Release notes](https://github.com/pola-rs/polars/releases)
- [Commits](pola-rs/polars@py-1.37.1...py-1.40.1)

---
updated-dependencies:
- dependency-name: polars
  dependency-version: 1.40.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -72,7 +72,7 @@ ray = [
 ]
 bodo = ["bodo>=2025.7.4"]
 daft = ["daft>=0.5.0"]
-polars = ["polars>=1.21.0,<2"]
+polars = ["polars>=1.40.1,<2"]
 snappy = ["python-snappy>=0.6.0,<1.0.0"]
 hive = ["thrift>=0.13.0,<1.0.0"]
 hive-kerberos = [