build(deps): bump fastify/github-action-merge-dependabot

Bumps [fastify/github-action-merge-dependabot](https://github.com/fastify/github-action-merge-dependabot) from v1.1.1 to v1.2.1.
- [Release notes](https://github.com/fastify/github-action-merge-dependabot/releases)
- [Commits](fastify/github-action-merge-dependabot@v1.1.1...afbe82b)

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

.github/workflows/ci.yml

@@ -93,7 +93,7 @@ jobs:
         needs: [commit-lint, lint, unit-tests]
         runs-on: ubuntu-latest
         steps:
-            - uses: fastify/github-action-merge-dependabot@v1.1.1
+            - uses: fastify/github-action-merge-dependabot@v1.2.1
               if: ${{ github.actor == 'dependabot[bot]' && github.event_name == 'pull_request' }}
               with:
                   github-token: ${{ secrets.GITHUB_TOKEN }}