CompatHelper: bump compat for Colors to 0.13 for package docs, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the Colors package from 0.12 to 0.12, 0.13 for package docs.
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 99.90%. Comparing base (abe1286) to head (b17b533).
Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #420   +/-   ##
=======================================
  Coverage   99.90%   99.90%           
=======================================
  Files          78       78           
  Lines        8289     8289           
=======================================
  Hits         8281     8281           
  Misses          8        8           

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