CI: (deps): Bump xarray from 2024.11.0 to 2025.1.0 in /ci

Bumps [xarray](https://github.com/pydata/xarray) from 2024.11.0 to 2025.1.0.
- [Release notes](https://github.com/pydata/xarray/releases)
- [Changelog](https://github.com/pydata/xarray/blob/main/HOW_TO_RELEASE.md)
- [Commits](pydata/xarray@v2024.11.0...v2025.01.0)

---
updated-dependencies:
- dependency-name: xarray
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

ci/requirements.txt

@@ -6,4 +6,4 @@ pint==0.24.4
 pyproj==3.7.0
 scipy==1.14.1
 traitlets==5.14.3
-xarray==2024.11.0
+xarray==2025.1.0