Bump ruff and remove Bokeh rc workarounds

[hoxbro]

Code changes are related to Ruff now flagging multiple line f-strings.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 13 lines in your changes are missing coverage. Please review.

Project coverage is 23.79%. Comparing base (075ae6e) to head (29d6d2b).
Report is 1 commits behind head on main.

Files	Patch %	Lines
holoviews/element/raster.py	0.00%	2 Missing ⚠️
holoviews/plotting/plotly/element.py	0.00%	2 Missing ⚠️
holoviews/tests/utils.py	0.00%	2 Missing ⚠️
holoviews/util/__init__.py	0.00%	2 Missing ⚠️
holoviews/core/dimension.py	0.00%	1 Missing ⚠️
holoviews/core/io.py	0.00%	1 Missing ⚠️
holoviews/ipython/archive.py	0.00%	1 Missing ⚠️
holoviews/operation/datashader.py	0.00%	1 Missing ⚠️
holoviews/plotting/bokeh/element.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #6152       +/-   ##
===========================================
- Coverage   88.69%   23.79%   -64.90%     
===========================================
  Files         316      316               
  Lines       66017    66014        -3     
===========================================
- Hits        58554    15711    -42843     
- Misses       7463    50303    +42840     

Flag	Coverage Δ
ui-tests	23.79% <0.00%> (+<0.01%)	⬆️

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[hoxbro]

It still needs a new dev release of Panel to pass the test, so I will merge this for now.

Ref: #6149