Try bokeh 3

[OriolAbril]

Description

Checklist

• Follows official PR format
• Includes a sample plot to visually illustrate the changes (only for plot-related functions)
• New features are properly documented (with an example if appropriate)?
• Includes new or updated tests to cover the new feature
• Code style correct (follows pylint and black guidelines)
• Changes are listed in changelog

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📚 Documentation preview 📚: https://arviz--2356.org.readthedocs.build/en/2356/

[OriolAbril]

There seems to be only a couple issues related to cds for bokeh, so it looks like we can finally move from bokeh 2.x. There are some zarr related failures too, so I'll have to look on that

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.00%. Comparing base (39eddd6) to head (6812755).
Report is 14 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2356       +/-   ##
===========================================
+ Coverage   68.33%   87.00%   +18.66%     
===========================================
  Files         123      123               
  Lines       12775    12775               
===========================================
+ Hits         8730    11115     +2385     
+ Misses       4045     1660     -2385     

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