Bump dangoslen/dependabot-changelog-helper from 3 to 4 (#1466)

Bumps [dangoslen/dependabot-changelog-helper](https://github.com/dangoslen/dependabot-changelog-helper) from 3 to 4.
- [Release notes](https://github.com/dangoslen/dependabot-changelog-helper/releases)
- [Changelog](https://github.com/dangoslen/dependabot-changelog-helper/blob/main/CHANGELOG.md)
- [Commits](dangoslen/dependabot-changelog-helper@v3...v4)

---
updated-dependencies:
- dependency-name: dangoslen/dependabot-changelog-helper
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/dependabot_pr.yml

@@ -34,7 +34,7 @@ jobs:
           echo "::set-output name=version::$(cat gradle.properties | grep systemProp.version | cut -d' ' -f3 | cut -d\. -f1,2)"
 
       - name: Update the changelog
-        uses: dangoslen/dependabot-changelog-helper@v3
+        uses: dangoslen/dependabot-changelog-helper@v4
         with:
           version: "Unreleased ${{ steps.version.outputs.version }}"