Bump xarray from 2024.1.1 to 2024.2.0 in /.github/dependabot

Bumps [xarray](https://github.com/pydata/xarray) from 2024.1.1 to 2024.2.0.
- [Release notes](https://github.com/pydata/xarray/releases)
- [Changelog](https://github.com/pydata/xarray/blob/main/HOW_TO_RELEASE.md)
- [Commits](pydata/xarray@v2024.01.1...v2024.02.0)

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

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

.github/dependabot/constraints.txt

@@ -4,5 +4,5 @@ h5netcdf==1.3.0
 hurry.filesize==0.9
 netCDF4==1.6.5
 requests==2.28.2
-xarray==2024.1.1
+xarray==2024.2.0
 zarr==2.16.1