Add obstore to Pangeo notebook

[maxrjones]

Repository: https://developmentseed.org/obstore/latest/
Documentation: https://developmentseed.org/obstore/latest/
Reasons to include:

• strong type checking for interaction with object storage
• fast performance with Zarr - https://github.com/maxrjones/zarr-obstore-performance
• Higher throughput on S3 - https://github.com/geospatial-jeff/pyasyncio-benchmark/blob/fe8f290cb3282dcc3bc96cae06ed5f90ad326eff/test_results/cog_header_results.csv

[github-actions]

👈 Try on Mybinder.org!

[pangeo-bot]

/condalock
Automatically locking new conda environment, building, and testing images...

[weiji14]

Thanks @maxrjones! I'll wait for an approval from @scottyhq too, just to avoid a slight conflict of interest.

[weiji14]

/condalock

(sorry, did a force push to resolve the merge conflict with #613, and need to re-lock).

[scottyhq]

Fine by me! As far as I'm concerned you should feel free to merge whatever you want here @weiji14 and @maxrjones.

[weiji14]

Thanks @scottyhq, just wanted to be mindful of adding DevSeed-authored libraries onto pangeo-docker-images 🙂 Have pushed a new tag at https://github.com/pangeo-data/pangeo-docker-images/releases/tag/2025.07.09 now 🎉