Update Dockerfile to 2025 build of jupyter/minimal-notebook

[tbarsballe]

This MR updates the Dockerfile to use jupyter/minimal-notebook:8515ad39f045, and includes additional dependency changes to support this:

• Adjust the libgl packages to ones that exist on modern ubuntu
• Adjust the requirements to include cartopy, which must be installed by conda and is required by the later pip install of descartes geoviews
• Remove the legacy nbextensions, as ipyleaflet and ipywidgets should now be supported by Jupyter 7 without additional configuration required.

TODO:

• Test opencv notebook to verify new libgl install
• Test descartes/geoviews notebook to verify updated cartopy install
• Test leaflet notebook to verify ipyleaflet extension works as expected under Jupyter 7
• [ ] Update documentation to match new Jupyter interface, where applicable. Everything still works as before, no doc updates necessary

[tbarsballe]

Verified jupyter-notebooks/use-cases/coastal-erosion-example/4_masks_and_filters.ipynb works with the new Dockerfile - OpenCV appears to still be working.

[tbarsballe]

Verified descartes and ipyleaflet using jupyter-notebooks/Analytics-API/user-guide
/01_getting_started_with_the_planet_analytics_api.ipynb, though we do get a (correct) warning:

[/tmp/ipykernel_13168/1689031255.py:2](http://localhost:8888/tmp/ipykernel_13168/1689031255.py#line=1): UserWarning: Geometry is in a geographic CRS. Results from 'centroid' are likely incorrect. Use 'GeoSeries.to_crs()' to re-project geometries to a projected CRS before this operation.

Might be worth adding some config to the notebook to mute that warning

[tbarsballe]

Tested geoviews on jupyter-notebooks/Analytics-API/user-guide/03_change_detection.ipynb

geoviews looks like it's still working fine, but that particular notebook is pretty out-of-date - none of the feed ids in the notebook exist anymore, and many of the properties referenced have been removed or renamed in modern change detection feeds. I'm not up-to-speed enough on Analytics API or change detection for fix those issues.