CompatHelper: bump compat for GenericLinearAlgebra to 0.3, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the GenericLinearAlgebra package from 0.2 to 0.2, 0.3.
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 #67 (85f9874) into main (6e010de) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #67   +/-   ##
=======================================
  Coverage   92.63%   92.63%           
=======================================
  Files          30       30           
  Lines        2513     2513           
=======================================
  Hits         2328     2328           
  Misses        185      185           

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