CompatHelper: bump compat for MeasureTheory to 0.15, (keep existing compat)

[github-actions[bot]]

This pull request changes the compat entry for the MeasureTheory package from 0.13 to 0.13, 0.15. 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[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 30.95%. Comparing base (36bc868) to head (68893b3). Report is 5 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #329 +/- ## ========================================== - Coverage 31.62% 30.95% -0.68% ========================================== Files 49 49 Lines 1230 1218 -12 ========================================== - Hits 389 377 -12 Misses 841 841 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.