gitaction local run

[agirodi]

This PR adds:

• Fixes of some minor things in the workflows, so they can be locally run with act
  • Adds timezone specification for sphinx
  • Adds black version specification
• Minor typo fixes

[codecov]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (426a1c4) 7.26% compared to head (fc108bf) 7.26%.
Report is 3 commits behind head on main.

Files	Patch %	Lines
whippersnappy/core.py	0.00%	5 Missing ⚠️
whippersnappy/cli/whippersnap.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##            main     #28   +/-   ##
=====================================
  Coverage   7.26%   7.26%           
=====================================
  Files          5       5           
  Lines        633     633           
  Branches      77      77           
=====================================
  Hits          46      46           
  Misses       585     585           
  Partials       2       2           

Flag	Coverage Δ
unittests	7.26% <0.00%> (ø)

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