Speed up and simplify CI

[mattcieslak]

The hackathon resulted in a very long/slow CI build. This combines everything into one job and skip building the pdf manual

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.51%. Comparing base (6b697dc) to head (20155ca).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #119   +/-   ##
=======================================
  Coverage   89.51%   89.51%           
=======================================
  Files           6        6           
  Lines        1717     1717           
=======================================
  Hits         1537     1537           
  Misses        180      180           

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