CompatHelper: bump compat for GeometricEquations to 0.16, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the GeometricEquations package from 0.14, 0.15 to 0.14, 0.15, 0.16.
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 62.80%. Comparing base (600b26a) to head (1255538).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #182      +/-   ##
==========================================
- Coverage   63.12%   62.80%   -0.33%     
==========================================
  Files         117      113       -4     
  Lines        8006     7232     -774     
==========================================
- Hits         5054     4542     -512     
+ Misses       2952     2690     -262     

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