ci: action cache v4

Author: gaudinnicolas

.github/workflows/pre-commit.yaml

@@ -19,7 +19,7 @@ jobs:
         poetry export --with dev --format=requirements.txt --output=requirements.txt
     - name: set PY
       run: echo "PY=$(python -c 'import hashlib, sys;print(hashlib.sha256(sys.version.encode()+sys.executable.encode()).hexdigest())')" >> $GITHUB_ENV
-    - uses: actions/cache@v3
+    - uses: actions/cache@v4
       with:
         path: ~/.cache/pre-commit
         key: pre-commit|${{ env.PY }}|${{ hashFiles('.pre-commit-config.yaml') }}