Add Windows arm Github runners

[mcbarton]

Description

Please include a summary of changes, motivation and context for this PR.

According to https://github.blog/changelog/2025-04-14-windows-arm64-hosted-runners-now-available-in-public-preview/ Windows arm Github runners are now available for free for public repositories. Therefore I have added them to our ci. Hopefully they pass the same tests as Windows x86, but won't know until the workflow runs.

Fixes # (issue)

Type of change

Please tick all options which are relevant.

• Bug fix
• New feature
• Added/removed dependencies
• Required documentation updates

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.56%. Comparing base (9458ebe) to head (a75f746).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #287      +/-   ##
==========================================
- Coverage   80.87%   80.56%   -0.32%     
==========================================
  Files          20       20              
  Lines         957      957              
  Branches       88       88              
==========================================
- Hits          774      771       -3     
- Misses        183      186       +3     

see 1 file with indirect coverage changes

see 1 file with indirect coverage changes

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