Update polars to >=1.33.0 in ci/environment.yml - proper testing in ci

Author: charles-turner-1

ci/environment.yml

@@ -18,7 +18,7 @@ dependencies:
   - netcdf4 >=1.5.5,!=1.6.1
   - pandas >=2.1.0
   - pip
-  - polars>=1.24.0
+  - polars>=1.33.0
   - pooch
   - pre-commit
   - pydantic >=2.0