Fix windows-11 detection for non-float platform.release() values

[ianmcorvidae]

(fixes #639)

@tuesdays if you get a chance, would you be able to test this? I'm defaulting to this being set as "not windows 11".

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.99%. Comparing base (29f355b) to head (afd071c).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #720   +/-   ##
=======================================
  Coverage   60.99%   60.99%           
=======================================
  Files          24       24           
  Lines        3899     3899           
=======================================
  Hits         2378     2378           
  Misses       1521     1521           

Flag	Coverage Δ
unittests	60.99% <100.00%> (ø)

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