Add id for cache step

.github/workflows/ci.yml

@@ -22,6 +22,7 @@ jobs:
       - name: Start MySQL
         run: sudo systemctl start mysql.service
       - uses: actions/cache@v4
+        id: cache
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ hashFiles('**/poetry.lock') }}