Fix the caching following upgrade of the github action

Author: Pierre-Sassoulas

.github/workflows/checks.yaml

@@ -11,7 +11,7 @@ on:
       - "maintenance/**"
 
 env:
-  CACHE_VERSION: 2
+  CACHE_VERSION: 3
   KEY_PREFIX: base-venv
   DEFAULT_PYTHON: "3.13"
   PRE_COMMIT_CACHE: ~/.cache/pre-commit