fix bokeh deprecation

[OriolAbril]

Description

Checklist

• Does the PR follow official PR format?
• Does the PR include new or updated tests to prevent issue recurrence (using pytest fixture pattern)? Not necessary, check are already failing, they should pass now.
• Is the code style correct (follows pylint and black guidelines)?
• Is the fix listed in the Maintenance and fixes section of the changelog?

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📚 Documentation preview 📚: https://arviz--2362.org.readthedocs.build/en/2362/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.00%. Comparing base (979687c) to head (ebe17ea).
Report is 18 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2362   +/-   ##
=======================================
  Coverage   87.00%   87.00%           
=======================================
  Files         123      123           
  Lines       12775    12775           
=======================================
  Hits        11115    11115           
  Misses       1660     1660           

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