Bump dependabot/fetch-metadata from 2 to 3 (#457)

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

Author: dependabot[bot]

.github/workflows/pr.yml

@@ -23,7 +23,7 @@ jobs:
     steps:
       - name: 📡 Dependabot metadata
         id: dependabot-metadata
-        uses: dependabot/fetch-metadata@v2
+        uses: dependabot/fetch-metadata@v3
 
       - name: ✔️ Merge PR
         if: |