Update .github/workflows/ci.yml

Co-authored-by: Alessio Buccino <[email protected]>

Author: bendichter

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     validate:
         runs-on: ubuntu-latest
         steps:
-        - uses: actions/checkout@v2
+        - uses: actions/checkout@v4
         - uses: actions/setup-python@v5
         - name: Install dependencies
           run: |