compat: plotly 6.0

[hoxbro]

Two big things with the plotly 6.0 release

1. The fig_dict no longer outputs numpy arrays but a special dict with information to create it. I have made a util for this.
2. scattermapbox is deprecated for scattermap, and by that logic, mapbox is deprecated for map, emits this warning: *scattermapbox* is deprecated! Use *scattermap* instead. Learn more at: https://plotly.com/python/mapbox-to-maplibre/. accesstoken is not needed for the new implementation and will give an error.

[codecov]

Codecov Report

Attention: Patch coverage is 94.17476% with 6 lines in your changes missing coverage. Please review.

Project coverage is 88.77%. Comparing base (d9861ae) to head (3a12185).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
holoviews/plotting/plotly/tiles.py	60.00%	4 Missing ⚠️
holoviews/tests/plotting/plotly/test_tiles.py	91.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6504      +/-   ##
==========================================
- Coverage   88.79%   88.77%   -0.03%     
==========================================
  Files         323      323              
  Lines       68731    68772      +41     
==========================================
+ Hits        61028    61049      +21     
- Misses       7703     7723      +20     

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