CompatHelper: bump compat for FITSIO to 0.17, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the FITSIO package from 0.16 to 0.16, 0.17.
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-commenter]

Codecov Report

Merging #55 (386ae64) into main (3e49773) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #55   +/-   ##
=======================================
  Coverage   89.32%   89.32%           
=======================================
  Files           8        8           
  Lines         815      815           
=======================================
  Hits          728      728           
  Misses         87       87           

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