Fix xarray 2024.7.0 errors

[thorbjoernl]

Change Summary

Resolve errors caused by removal of deprecated resample parameters in xarray 2024.7.0

The oldest version of xarray which supports base and offset is xarray 2022.12.0, which is set as the new oldest supported version (previously 2022.10.0).

• https://docs.xarray.dev/en/stable/whats-new.html#v2022-12-0-2022-dec-2

Related issue number

closes #1289

Checklist

• Start with a draft-PR
• The PR title is a good summary of the changes
• PR is set to AeroTools and a tentative milestone
• Documentation reflects the changes where applicable
• Tests for the changes exist where applicable
• Tests pass locally
• Tests pass on CI
• At least 1 reviewer is selected
• Make PR ready to review

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.98%. Comparing base (1a3c12e) to head (c4b993d).
Report is 317 commits behind head on main-dev.

Additional details and impacted files

@@             Coverage Diff              @@
##           main-dev    #1292      +/-   ##
============================================
+ Coverage     78.96%   78.98%   +0.02%     
============================================
  Files           136      136              
  Lines         20842    20793      -49     
============================================
- Hits          16458    16424      -34     
+ Misses         4384     4369      -15     

Flag	Coverage Δ
unittests	78.98% <100.00%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[lewisblake]

Thanks!