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 0.7.11, 0.8 to 0.7.11, 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[bot]]

Codecov Report

Merging #235 (c1334d3) into main (e918e9e) will decrease coverage by 23.21%. The diff coverage is n/a.

@@             Coverage Diff             @@
##             main     #235       +/-   ##
===========================================
- Coverage   65.97%   42.76%   -23.22%     
===========================================
  Files           9        9               
  Lines         629      622        -7     
===========================================
- Hits          415      266      -149     
- Misses        214      356      +142     

Impacted Files	Coverage Δ
src/factorization.jl	31.34% <0.00%> (-47.30%)	:arrow_down:
src/iterative_wrappers.jl	56.21% <0.00%> (-21.75%)	:arrow_down:
src/default.jl	40.90% <0.00%> (-9.10%)	:arrow_down:
src/common.jl	85.18% <0.00%> (-3.91%)	:arrow_down:

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