Adding python 3.10 to CI

[bsipocz]

• remove docs build from GHA
• add 3.10 to GHA
• revisit 'all' groups in extras require based on which dependencies support 3.10 and 3.9

[bsipocz]

OK, so it seems that py3.10 compatibility should be added to upstream dependencies first, as I run into issues both with pyvo and with mocpy (cdshealpix).

[codecov]

Codecov Report

Merging #2186 (3667dac) into main (17c79f9) will increase coverage by 0.16%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2186      +/-   ##
==========================================
+ Coverage   62.40%   62.57%   +0.16%     
==========================================
  Files         131      131              
  Lines       16777    16777              
==========================================
+ Hits        10470    10498      +28     
+ Misses       6307     6279      -28     

Impacted Files	Coverage Δ
astroquery/utils/commons.py	78.28% <0.00%> (-0.51%)	⬇️
astroquery/cds/core.py	68.75% <0.00%> (-0.49%)	⬇️
astroquery/utils/progressbar.py	20.45% <0.00%> (-0.48%)	⬇️
astroquery/ipac/ned/core.py	88.37% <0.00%> (-0.47%)	⬇️
astroquery/utils/tap/conn/tapconn.py	47.42% <0.00%> (-0.18%)	⬇️
astroquery/besancon/core.py	69.43% <0.00%> (+0.15%)	⬆️
astroquery/utils/tap/core.py	41.58% <0.00%> (+0.16%)	⬆️
astroquery/utils/tap/model/job.py	58.54% <0.00%> (+0.17%)	⬆️
astroquery/gemini/urlhelper.py	87.50% <0.00%> (+0.26%)	⬆️
astroquery/jplsbdb/core.py	78.69% <0.00%> (+0.59%)	⬆️
... and 4 more

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