Bump heinrichreimer/action-github-changelog-generator from 2.1 to 2.4

Bumps [heinrichreimer/action-github-changelog-generator](https://github.com/heinrichreimer/action-github-changelog-generator) from 2.1 to 2.4.
- [Release notes](https://github.com/heinrichreimer/action-github-changelog-generator/releases)
- [Commits](janheinrichmerker/action-github-changelog-generator@v2.1...v2.4)

---
updated-dependencies:
- dependency-name: heinrichreimer/action-github-changelog-generator
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
     - name: "✏️ Generate changelog"
       id: generate-changelog
       if: runner.os == 'Linux'
-      uses: heinrichreimer/action-github-changelog-generator@v2.1
+      uses: heinrichreimer/action-github-changelog-generator@v2.4
       with:
         onlyLastTag: "true"
         stripHeaders: "true"