CompatHelper: bump compat for ForwardDiff to 1 for package test, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the ForwardDiff package from 0.10.36 to 0.10.36, 1 for package test.
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 0.00%. Comparing base (5a1d919) to head (8a8ea16).

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HEAD has 3 uploads less than BASE

Flag	BASE (5a1d919)	HEAD (8a8ea16)
unittests	25	22

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #2325       +/-   ##
==========================================
- Coverage   96.89%   0.00%   -96.89%     
==========================================
  Files         496     496               
  Lines       40759   40493      -266     
==========================================
- Hits        39490       0    -39490     
- Misses       1269   40493    +39224     

Flag	Coverage Δ
unittests	0.00% <ø> (-96.89%)	⬇️

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[ranocha]

Should be done in #2320