CompatHelper: bump compat for "InfiniteArrays" to "0.12"

[github-actions]

This pull request changes the compat entry for the InfiniteArrays package from 0.11 to 0.11, 0.12.

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

Merging #79 (38e691b) into master (2125aca) will not change coverage.
The diff coverage is n/a.

❗ Current head 38e691b differs from pull request most recent head 89c48f5. Consider uploading reports for the commit 89c48f5 to get more accurate results

@@          Coverage Diff           @@
##           master     #79   +/-   ##
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  Coverage    6.23%   6.23%           
======================================
  Files          75      75           
  Lines        7265    7265           
======================================
  Hits          453     453           
  Misses       6812    6812           

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