chore(deps): update dependabot/fetch-metadata action to v2

Author: renovate[bot]

.github/workflows/Dependabot auto-merge.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
       - name: Dependabot metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v1.6.0
+        uses: dependabot/fetch-metadata@v2.3.0
         with:
           github-token: '${{ secrets.GITHUB_TOKEN }}'
       - name: Enable auto-merge for Dependabot PRs