Bump dependabot/fetch-metadata in the actions-dependencies group

Bumps the actions-dependencies group with 1 update: [dependabot/fetch-metadata](https://github.com/dependabot/fetch-metadata).


Updates `dependabot/fetch-metadata` from 1.1.1 to 2.1.0
- [Release notes](https://github.com/dependabot/fetch-metadata/releases)
- [Commits](dependabot/fetch-metadata@v1.1.1...v2.1.0)

---
updated-dependencies:
- dependency-name: dependabot/fetch-metadata
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions-dependencies
...

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

.github/workflows/dependabot-automerge.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       - name: Dependabot metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v1.1.1
+        uses: dependabot/fetch-metadata@v2.1.0
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"
       - name: Enable auto-merge for Dependabot PRs