CompatHelper: bump compat for DimensionalData in [weakdeps] to 0.30, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the DimensionalData package from 0.29 to 0.29, 0.30.
This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry.
It is your responsibility to make sure that your package tests pass before you merge this pull request.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.67%. Comparing base (206e3e3) to head (53408dd).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #41   +/-   ##
=======================================
  Coverage   88.67%   88.67%           
=======================================
  Files           7        7           
  Lines         318      318           
=======================================
  Hits          282      282           
  Misses         36       36           

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