chore(deps): update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -21,7 +21,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         uses: actions/setup-python@v4
         with: