💚(ci) fix performance issue of test job

Currently the test job seems to hit the maximum CPU resource available.
In order to prevent that we try to run tests on several workers.

.circleci/config.yml

@@ -93,13 +93,17 @@ jobs:
   test:
     docker:
       - image: cimg/node:16.18
+    parallelism: 4
+    resource_class: large
     working_directory: ~/cunningham
     steps:
       - *checkout_cunningham
       - *restore_node_modules
+      - attach_workspace:
+          at: ~/cunningham
       - run:
           name: Run test suites over all workspaces
-          command: yarn test
+          command: yarn test-ci
 
   # ---- Internationalization ----
   crowdin-upload:
@@ -222,4 +226,4 @@ workflows:
           requires:
             - build
             - lint
-            - test
+            - test