CompatHelper: bump compat for JLD2 to 0.6, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the JLD2 package from 0.5 to 0.5, 0.6.
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 88.93%. Comparing base (34681f0) to head (97d8393).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1153      +/-   ##
==========================================
- Coverage   89.27%   88.93%   -0.34%     
==========================================
  Files         211      211              
  Lines       26692    26688       -4     
==========================================
- Hits        23829    23736      -93     
- Misses       2863     2952      +89     

Flag	Coverage Δ
drivers	0.00% <ø> (ø)
tests	88.94% <ø> (-0.34%)	⬇️

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