chore(deps): update actions/checkout action to v5

Author: unity-renovate[bot]

.github/workflows/pr-verification.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Check PR description
         uses: actions/github-script@v7