chore: use python>=3.10 in conda env, fix map plot example

[wpbonelli]

Fix a problem in example notebook CI. The delete parameter to TemporaryDirectory was added in Python 3.12, but we still want to support >=3.10. Also the environment.yml still had a lower bound of 3.9, bump it.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.1%. Comparing base (7eb7c88) to head (f4c503d).
Report is 11 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #2501   +/-   ##
=======================================
  Coverage     76.1%   76.1%           
=======================================
  Files          296     296           
  Lines        64215   64215           
=======================================
  Hits         48885   48885           
  Misses       15330   15330           

see 1 file with indirect coverage changes

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