chore: restore electron renderer ci job

Author: achingbrain

.github/workflows/ci.yml

@@ -151,3 +151,24 @@ jobs:
       - run: yarn --prefer-offline --frozen-lockfile
       - run: yarn run build
       - run: npx xvfb-maybe npm run test:electron-main -- --bail
+
+  test-electron-renderer:
+    name: Test Electron Renderer
+    needs: check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 16
+      - uses: actions/checkout@v2
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+      - uses: actions/cache@v2
+        id: yarn-cache
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+      - run: yarn --prefer-offline --frozen-lockfile