ci: add Windows CI for Fips builds with non-MSVC compilers

[aminya]

Issues:

Addresses #2982 (comment)

Description of changes:

This adds CI for non-MSVC compilers to build FIPS on Windows.

Call-outs:

Passing the builds requires merging #2982

Testing:

CI windows-alt.yml

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and the ISC license.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.31%. Comparing base (478ca60) to head (56bba0c).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2984   +/-   ##
=======================================
  Coverage   78.30%   78.31%           
=======================================
  Files         689      689           
  Lines      120959   120966    +7     
  Branches    16985    16985           
=======================================
+ Hits        94717    94731   +14     
+ Misses      25345    25341    -4     
+ Partials      897      894    -3     

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[justsmth]

Thanks again for the PR! I'm combining this with #2982, which is needed for these tests to succeed.