Update actions/checkout action to v4

[renovate]

This PR contains the following updates:

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

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Release Notes

actions/checkout (actions/checkout)

v4

Compare Source

• Check out other refs/* by commit if provided, fall back to ref by @​orhantoy in https://github.com/actions/checkout/pull/1924

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Configuration

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[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (8cf0886) 74.19% compared to head (a20932a) 74.19%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #48   +/-   ##
=======================================
  Coverage   74.19%   74.19%           
=======================================
  Files          28       28           
  Lines         124      124           
=======================================
  Hits           92       92           
  Misses         32       32           

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