test: fix unit tests on windows machines (#3678)

.github/workflows/nodejs.yml

@@ -39,18 +39,19 @@ jobs:
           key: ${{ runner.os }}-yarn-${{ hashFiles(format('{0}{1}', github.workspace, '/yarn.lock')) }}
           restore-keys: |
             ${{ runner.os }}-yarn-
-      - name: npm install, unit test and build
-        run: |
-          node --version
-          npm --version
-          yarn --version
-          yarn --frozen-lockfile
-          yarn bootstrap
-          yarn test:ci
-          yarn build:demo
+      - name: log versions
+        run: node --version && npm --version && yarn --version
+      - name: install dependecies
+        run: yarn --frozen-lockfile && yarn bootstrap
+      - name: run unit tests
+        run: yarn test:ci
         env:
           CI: true
           NODE_OPTIONS: --max-old-space-size=4096
+      - name: build demo site
+        run: yarn build:demo
+        env:
+          NODE_OPTIONS: --max-old-space-size=4096
       - uses: actions/upload-artifact@master
         with:
           name: dev-test-website-${{ runner.os }}-node-${{ matrix.node-version }}