Drop support for Python 3.9 and 3.10

[weiji14]

Set minimum required Python version to 3.11+, following SPEC 0. Dropping support prior to icepyx v2.x release.

Merge this after #622.

Supersedes #608, addresses #569

[github-actions]

👈 Launch a binder notebook on this branch for commit e02be9b

I will automatically update this comment whenever this PR is modified

👈 Launch a binder notebook on this branch for commit 52ebecf

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.80%. Comparing base (54e3c1d) to head (52ebecf).

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HEAD has 5 uploads less than BASE

Flag	BASE (54e3c1d)	HEAD (52ebecf)
	7	2

Additional details and impacted files

@@               Coverage Diff               @@
##           development     #655      +/-   ##
===============================================
- Coverage        71.88%   66.80%   -5.08%     
===============================================
  Files               37       35       -2     
  Lines             3112     3058      -54     
  Branches           422      422              
===============================================
- Hits              2237     2043     -194     
- Misses             764      928     +164     
+ Partials           111       87      -24     

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