Github deprecated Visual Studio 2017 runners

[jwillemsen]

* .github/workflows/windows.yml:

[codecov]

Codecov Report

Merging #202 (f5581d7) into master (7c8e99d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #202   +/-   ##
=======================================
  Coverage   59.60%   59.60%           
=======================================
  Files         570      570           
  Lines       47498    47498           
  Branches     4186     4186           
=======================================
  Hits        28312    28312           
  Misses      16115    16115           
  Partials     3071     3071           

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