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

• Bump the minor-npm-dependencies group across 1 directory with 4 updates by @​dependabot in https://github.com/actions/checkout/pull/1739
• Bump actions/checkout from 3 to 4 by @​dependabot in https://github.com/actions/checkout/pull/1697
• Check out other refs/* by commit by @​orhantoy in https://github.com/actions/checkout/pull/1774
• Pin actions/checkout's own workflows to a known, good, stable version. by @​jww3 in https://github.com/actions/checkout/pull/1776

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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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.17%. Comparing base (1387eec) to head (2dcf86b).
Report is 1 commits behind head on master.

❗ Current head 2dcf86b differs from pull request most recent head 2290b3a. Consider uploading reports for the commit 2290b3a to get more accurate results

Additional details and impacted files

@@           Coverage Diff            @@
##             master     #33   +/-   ##
========================================
  Coverage      0.17%   0.17%           
  Complexity        1       1           
========================================
  Files            38      38           
  Lines           559     559           
  Branches         50      50           
========================================
  Hits              1       1           
  Misses          558     558           

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