Bump dependabot/fetch-metadata from 1.3.6 to 1.4.0

Bumps [dependabot/fetch-metadata](https://github.com/dependabot/fetch-metadata) from 1.3.6 to 1.4.0.
- [Release notes](https://github.com/dependabot/fetch-metadata/releases)
- [Commits](https://github.com/dependabot/fetch-metadata/compare/v1.3.6...v1.4.0)

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

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

.github/workflows/auto-merge.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - name: Dependabot metadata
         id: dependabot-metadata
-        uses: dependabot/fetch-metadata@v1.3.6
+        uses: dependabot/fetch-metadata@v1.4.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}