CompatHelper: bump compat for Flux to 0.14, (keep existing compat)

[github-actions[bot]]

This pull request changes the compat entry for the Flux package from 0.13.16 to 0.13.16, 0.14. 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

Merging #121 (4a765b3) into master (2bc3d51) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #121   +/-   ##
=======================================
  Coverage   91.30%   91.30%           
=======================================
  Files          35       35           
  Lines        1622     1622           
=======================================
  Hits         1481     1481           
  Misses        141      141           

Flag	Coverage Δ
unittests	91.30% <ø> (ø)

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