Upgrape actions to newest versions

[mrmundt]

Fixes NA

Summary/Motivation:

There have been multiple action version changes, including typos -> main, python -> v7, etc.

Changes proposed in this PR:

• Update action versions
• Update target branch for typos to main
• BONUS: Remove specific numpy2 job

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  • AI tools generated code (apart from tests)

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    • Ran the code and fixed issues
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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.14%. Comparing base (1514cb7) to head (58c2195).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4045      +/-   ##
==========================================
+ Coverage   89.96%   90.14%   +0.18%     
==========================================
  Files         917      917              
  Lines      109282   109282              
==========================================
+ Hits        98311    98511     +200     
+ Misses      10971    10771     -200     

Flag	Coverage Δ
builders	29.12% <ø> (+<0.01%)	⬆️
default	86.14% <ø> (?)
expensive	35.09% <ø> (?)
linux	87.67% <ø> (-1.80%)	⬇️
linux_other	87.67% <ø> (+0.18%)	⬆️
oldsolvers	28.02% <ø> (+<0.01%)	⬆️
osx	83.12% <ø> (ø)
win	85.44% <ø> (+<0.01%)	⬆️

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