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

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v2 -> 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

v3

Compare Source

• Fix: Mark test scripts with Bash'isms to be run via Bash
• Add option to fetch tags even if fetch-depth > 0

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Configuration

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[codecov]

Codecov Report

Merging #31 (64178b9) into main (4704262) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #31   +/-   ##
=======================================
  Coverage   80.56%   80.56%           
=======================================
  Files           3        3           
  Lines         211      211           
=======================================
  Hits          170      170           
  Misses         30       30           
  Partials       11       11           

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