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

.github/workflows/python-app.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Install uv
       uses: astral-sh/setup-uv@v6
       with: