CompatHelper: bump compat for NNlib to 0.9, (keep existing compat)

[github-actions[bot]]

This pull request changes the compat entry for the NNlib package from 0.8 to 0.8, 0.9. 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 #159 (9ca63b2) into main (d06e191) will not change coverage. The diff coverage is n/a.

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@@           Coverage Diff           @@
##             main     #159   +/-   ##
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  Coverage   88.50%   88.50%           
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  Files          15       15           
  Lines         600      600           
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  Hits          531      531           
  Misses         69       69