⬆️ Bump release-drafter/release-drafter from 5.15.0 to 5.21.1

Bumps [release-drafter/release-drafter](https://github.com/release-drafter/release-drafter) from 5.15.0 to 5.21.1.
- [Release notes](https://github.com/release-drafter/release-drafter/releases)
- [Commits](https://github.com/release-drafter/release-drafter/compare/v5.15.0...v5.21.1)

---
updated-dependencies:
- dependency-name: release-drafter/release-drafter
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/release-drafter.yml

@@ -11,6 +11,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # Drafts your next Release notes as Pull Requests are merged into "master"
-      - uses: release-drafter/release-drafter@v5.15.0
+      - uses: release-drafter/release-drafter@v5.21.1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}