Update actions/checkout digest to de0fac2

Author: renovate[bot]

.github/workflows/flake8.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-24.04
 
     steps:
-    - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
     - name: Set up Python
       uses: actions/setup-python@v6
       with: