fix caching

.github/workflows/ci.yml

@@ -129,9 +129,7 @@ jobs:
       uses: actions/cache@v1
       with:
         path: node_modules
-        key: ${{ runner.OS }}-node_modules-${{ matrix.node-version }}-${{ hashFiles('**/yarn.lock') }}--build-prod
-        restore-keys: |
-          ${{ runner.OS }}-node_modules-${{ matrix.node-version }}-${{ hashFiles('**/yarn.lock') }}
+        key: ${{ runner.OS }}-node_modules-${{ matrix.node-version }}-${{ hashFiles('**/yarn.lock') }}
     - name: Launch MongoDB
       uses: wbari/start-mongoDB@v0.2
       with: