CompatHelper: bump compat for "DataFrames" to "0.22"

[github-actions]

This pull request changes the compat entry for the DataFrames package from 0.21 to 0.21, 0.22.

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-io]

Codecov Report

Merging #10 (bf414e2) into main (0c1ed7c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #10   +/-   ##
=======================================
  Coverage   31.35%   31.35%           
=======================================
  Files          33       33           
  Lines        1113     1113           
=======================================
  Hits          349      349           
  Misses        764      764           

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