🎨 Add ruff notebook formatting & remove F401 ignore

[Zethson]

• Updates our ruff pre-commit check version which now also formats and lints notebooks
• Fixed some minor issues in our notebooks that Ruff found
• Removes the F401 ignore

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.47%. Comparing base (2a17099) to head (6beb36a).
Report is 27 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2327      +/-   ##
==========================================
- Coverage   92.82%   92.47%   -0.35%     
==========================================
  Files          55       80      +25     
  Lines        7202     8610    +1408     
==========================================
+ Hits         6685     7962    +1277     
- Misses        517      648     +131     

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[github-actions]

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