CompatHelper: bump compat for MatrixAlgebraKit to 0.6, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the MatrixAlgebraKit package from 0.5 to 0.5, 0.6.
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

❌ Patch coverage is 89.74359% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.97%. Comparing base (e489457) to head (7dad258).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/factorizations/orthnull.jl	86.66%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #184      +/-   ##
==========================================
+ Coverage   71.85%   71.97%   +0.11%     
==========================================
  Files          37       37              
  Lines        2029     2030       +1     
==========================================
+ Hits         1458     1461       +3     
+ Misses        571      569       -2     

Flag	Coverage Δ
docs	5.95% <0.00%> (ø)

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[mtfishman]

@lkdvos this upgrades to the new orth interface in MatrixAlgebraKit.jl v0.6, the upgrade is pretty straightforward. I think the LeftOrthAlgorithm/RightOrthAlgorithm wrappers are nice to use here.