update pytest.yaml

.github/workflows/run_pytest.yaml

@@ -28,7 +28,7 @@ jobs:
           poetry config virtualenvs.in-project true
 
       - name: Cache the poetry cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ./.venv
           key: ${{ runner.os }}-poetry-${{ hashFiles('**/poetry.lock') }}