feat!(maker-pkg): upgrade to @electron/osx-sign

[erickzhao]

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• The changes are appropriately documented (if applicable).
• The changes have sufficient test coverage (if applicable).
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Summarize your changes:

Swaps out the old electron-osx-sign package for the newer @electron/osx-sign one. Closes #2957

Breaking change: identity-validation flag is camelCased to identityValidation now.

[codecov]

Codecov Report

Merging #2959 (b7741f1) into main (f5a9d81) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #2959      +/-   ##
==========================================
+ Coverage   71.07%   71.08%   +0.01%     
==========================================
  Files          78       78              
  Lines        2392     2393       +1     
  Branches      452      452              
==========================================
+ Hits         1700     1701       +1     
  Misses        469      469              
  Partials      223      223              

Impacted Files	Coverage Δ
packages/maker/pkg/src/MakerPKG.ts	93.33% <100.00%> (+0.47%)	⬆️

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[VerteDinde]

Breaking change: identity-validation flag is camelCased to identityValidation now.

Noting this in the release blog post