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 #1756 (02a01eb) into master (d5a1b58) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1756   +/-   ##
=========================================
  Coverage     76.47%   76.47%           
  Complexity     2297     2297           
=========================================
  Files           126      126           
  Lines          8290     8290           
  Branches       2080     2080           
=========================================
  Hits           6340     6340           
  Misses         1024     1024           
  Partials        926      926           

[github-actions[bot]]

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

   164 files  ±0     164 suites  ±0   6m 2s :stopwatch: ±0s 1 380 tests ±0  1 321 :heavy_check_mark: ±0  59 :zzz: ±0  0 :x: ±0  2 759 runs  ±0  2 699 :heavy_check_mark: ±0  60 :zzz: ±0  0 :x: ±0 

Results for commit 02a01eb5. ± Comparison against base commit d5a1b58f.

[github-actions[bot]]

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

   164 files  ±0     164 suites  ±0   4m 58s :stopwatch: ±0s 1 380 tests ±0  1 333 :heavy_check_mark: ±0  47 :zzz: ±0  0 :x: ±0  2 759 runs  ±0  2 711 :heavy_check_mark: ±0  48 :zzz: ±0  0 :x: ±0 

Results for commit 02a01eb5. ± Comparison against base commit d5a1b58f.