ci: Update actions to get rid of deprecated...

[supervacuus]

...node.js runner versions:

https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/

It might also be relevant for the deprecation of the set-output command:

https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

which we also don't invoke directly but via our actions.

[Swatinem]

I think the failing jobs need an update for the python dependencies.

[supervacuus]

I think the failing jobs need an update for the python dependencies.

the new setup-python action requires a specified python-version or it installs python2 :-)

[codecov-commenter]

Codecov Report

Merging #767 (17d4c49) into master (fbab203) will decrease coverage by 1.70%. The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #767      +/-   ##
==========================================
- Coverage   82.98%   81.28%   -1.71%     
==========================================
  Files          53       53              
  Lines        5032     6886    +1854     
  Branches     1120     1120              
==========================================
+ Hits         4176     5597    +1421     
- Misses        745     1177     +432     
- Partials      111      112       +1     

[supervacuus]

@Swatinem, danger somehow craps itself. I added a changelog, can I merge it?

[Swatinem]

Lets wait for @chadwhitacre to answer the question around our actions usage policy.