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

[github-actions[bot]]

This pull request changes the compat entry for the Krylov 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 #129 (97a94ac) into master (497eecf) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #129   +/-   ##
=======================================
  Coverage   89.02%   89.02%           
=======================================
  Files          43       43           
  Lines        2751     2751           
=======================================
  Hits         2449     2449           
  Misses        302      302           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.