chore(deps): update actions/cache action to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/cache	action	major	v3 -> v4

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Release Notes

actions/cache (actions/cache)

v4

Compare Source

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Configuration

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.87%. Comparing base (49c7f75) to head (7a17ab9).
Report is 2 commits behind head on master.

❗ Current head 7a17ab9 differs from pull request most recent head 708eb93

Please upload reports for the commit 708eb93 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #580      +/-   ##
==========================================
+ Coverage   91.36%   91.87%   +0.50%     
==========================================
  Files          50       52       +2     
  Lines        2756     2817      +61     
==========================================
+ Hits         2518     2588      +70     
+ Misses        238      229       -9     

Flag	Coverage Δ
os-ubuntu-latest	91.83% <ø> (?)
os-windows-latest	89.50% <ø> (-1.86%)	⬇️
py-3.10	91.79% <ø> (+2.61%)	⬆️
py-3.11	91.83% <ø> (+2.64%)	⬆️
py-3.9	91.79% <ø> (+0.47%)	⬆️
unittests	91.87% <ø> (+0.50%)	⬆️

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