feat: add dependabot-fetch-metadata action (#2600)

Author: jaidisido

.github/workflows/dependabot-prs.yml

@@ -0,0 +1,15 @@
+name: Dependabot Pull Request Metadata
+on: pull_request_target
+jobs:
+  build:
+    permissions:
+      pull-requests: read
+    runs-on: ubuntu-latest
+    steps:
+    - name: Fetch Dependabot metadata
+      id: dependabot-metadata
+      uses: dependabot/fetch-metadata@v1
+      with:
+        alert-lookup: true
+        compat-lookup: true
+        github-token: ${{ secrets.GITHUB_TOKEN }}