fix pr.yaml deprecated action version

Author: debdutdeb

.github/workflows/pr.yaml

@@ -10,7 +10,7 @@ jobs:
     outputs:
       tag: ${{ steps.vars.outputs.tag }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - id: vars
         shell: bash
         run: |