Upgrade actions/setup-python

[cclauss]

No description provided.

[codecov]

Codecov Report

Merging #19 (b66d6ad) into main (ed8309e) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main       #19   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            9         9           
  Lines          559       559           
  Branches       145       145           
=========================================
  Hits           559       559           

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[samuelcolvin]

Thanks