chore: update ci commands

Author: Hidetaka Okamoto

.github/workflows/node.js.yml

@@ -25,7 +25,7 @@ jobs:
       uses: actions/setup-node@v2
       with:
         node-version: ${{ matrix.node-version }}
-        cache: 'npm'
+        cache: 'yarn'
     - run: yarn
     - run: yarn run lint
     - run: yarn run test -- --ci