Update actions/checkout action to v4

[renovate[bot]]

This PR contains the following updates:

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

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⚠ Dependency Lookup Warnings ⚠

Warnings were logged while processing this repo. Please check the Dependency Dashboard for more information.

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Release Notes

actions/checkout (actions/checkout)

### [`v4`](https://togithub.com/actions/checkout/blob/HEAD/CHANGELOG.md#v400) [Compare Source](https://togithub.com/actions/checkout/compare/v3...v4) - [Support fetching without the --progress option](https://togithub.com/actions/checkout/pull/1067) - [Update to node20](https://togithub.com/actions/checkout/pull/1436)

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Configuration

📅 Schedule: Branch creation - "before 4am on Monday" (UTC), Automerge - At any time (no schedule defined).

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[codecov[bot]]

Codecov Report

Merging #1730 (3c2112b) into master (fbe1146) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1730   +/-   ##
=========================================
  Coverage     78.21%   78.21%           
  Complexity     2324     2324           
=========================================
  Files           126      126           
  Lines          8223     8223           
  Branches       2073     2073           
=========================================
  Hits           6432     6432           
  Misses          876      876           
  Partials        915      915           

[github-actions[bot]]

JUnit Tests (Windows, EnricoMi/publish-unit-test-result-action@v2)

   164 files  ±0     164 suites  ±0   6m 58s :stopwatch: ±0s 1 377 tests ±0  1 360 :heavy_check_mark: ±0  17 :zzz: ±0  0 :x: ±0  2 756 runs  ±0  2 739 :heavy_check_mark: ±0  17 :zzz: ±0  0 :x: ±0 

Results for commit 3c2112b1. ± Comparison against base commit fbe1146c.

[github-actions[bot]]

JUnit Tests (macOS, EnricoMi/publish-unit-test-result-action@v2)

   164 files  ±0     164 suites  ±0   6m 10s :stopwatch: ±0s 1 377 tests ±0  1 341 :heavy_check_mark: ±0  36 :zzz: ±0  0 :x: ±0  2 756 runs  ±0  2 720 :heavy_check_mark: ±0  36 :zzz: ±0  0 :x: ±0 

Results for commit 3c2112b1. ± Comparison against base commit fbe1146c.