Add runInBand option to tests for reliability

Author: jhildenbiddle

.github/workflows/test.yml

@@ -28,12 +28,12 @@ jobs:
       - name: bootstrap
         run: npm run bootstrap
       - name: unit tests
-        run: npm run test:unit -- -ci
+        run: npm run test:unit -- -ci --runInBand
       - name: integration tests
-        run: npm run test:integration -- -ci
+        run: npm run test:integration -- -ci --runInBand
       - uses: microsoft/playwright-github-action@v1.3.0
       - name: e2e tests
-        run: npm run test:e2e -- --ci
+        run: npm run test:e2e -- --ci --runInBand
       - name: Upload artifacts (diff output)
         uses: actions/upload-artifact@v2
         if: failure()