Bump dangoslen/dependabot-changelog-helper from 2 to 3

Bumps [dangoslen/dependabot-changelog-helper](https://github.com/dangoslen/dependabot-changelog-helper) from 2 to 3.
- [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@v2...v3)

---
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]>

.github/workflows/dependabot_pr.yml

@@ -29,7 +29,7 @@ jobs:
           token: ${{ steps.github_app_token.outputs.token }}
 
       - name: Update the changelog
-        uses: dangoslen/dependabot-changelog-helper@v2
+        uses: dangoslen/dependabot-changelog-helper@v3
         with:
           version: "Unreleased"