Potential fix for code scanning alert no. 2: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: rbamos

.github/workflows/dependabot-prs.yml

@@ -1,4 +1,7 @@
 name: Dependabot Pull Request
+permissions:
+  contents: read
+  pull-requests: write
 on:
   pull_request_target:
     types: [opened, synchronize, reopened, labeled]