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 ✅

Comparison is base (65aea40) 82.13% compared to head (87013d3) 82.13%.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #811   +/-   ##
=========================================
  Coverage     82.13%   82.13%           
  Complexity      179      179           
=========================================
  Files            49       49           
  Lines          1444     1444           
  Branches        189      189           
=========================================
  Hits           1186     1186           
  Misses          166      166           
  Partials         92       92           

Flag	Coverage Δ
unittests	82.13% <ø> (ø)

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