CompatHelper: bump compat for "ArnoldiMethod" to "0.1"

[github-actions]

This pull request changes the compat entry for the ArnoldiMethod package from 0.0.4 to 0.0.4, 0.1.

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

Merging #136 (b81a0ad) into master (2ce59f9) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #136   +/-   ##
=======================================
  Coverage   33.26%   33.26%           
=======================================
  Files           9        9           
  Lines         526      526           
=======================================
  Hits          175      175           
  Misses        351      351           

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