chore(workflows): upgrade dependabot-metadata action in dependabot-reviewer.yml

This commit upgrades the dependabot-metadata action used in the dependabot-reviewer workflow. The version has been updated to improve the functionality of the workflow.

Author: Raouf25

.github/workflows/dependabot-reviewer.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
       - name: Dependabot metadata
         id: dependabot-metadata
-        uses: dependabot/fetch-metadata@v1.3.1
+        uses: dependabot/fetch-metadata@v2.1.0
       - name: Enable auto-merge for Dependabot PRs
         run: gh pr merge --auto --merge "$PR_URL"
         env: