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

[github-actions]

This pull request changes the compat entry for the ForwardDiff package from 0.10 to 0.10, 1.
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 85.62%. Comparing base (bf55b19) to head (8acdea4).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #16      +/-   ##
==========================================
+ Coverage   85.09%   85.62%   +0.53%     
==========================================
  Files           7        6       -1     
  Lines         161      160       -1     
==========================================
  Hits          137      137              
+ Misses         24       23       -1     

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