Bump dependabot/fetch-metadata from 2.3.0 to 2.4.0 (#873)

Bumps [dependabot/fetch-metadata](https://github.com/dependabot/fetch-metadata) from 2.3.0 to 2.4.0.
- [Release notes](https://github.com/dependabot/fetch-metadata/releases)
- [Commits](dependabot/fetch-metadata@v2.3.0...v2.4.0)

---
updated-dependencies:
- dependency-name: dependabot/fetch-metadata
  dependency-version: 2.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/approve-dependencies.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - name: Dependabot metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v2.3.0
+        uses: dependabot/fetch-metadata@v2.4.0
       - name: Approve PR
         if: ${{contains(steps.metadata.outputs.dependency-names, 'AWSSDK.DynamoDBv2')}}
         run: gh pr review --approve "$PR_URL"