updated circleci.

.circleci/config.yml

@@ -1,16 +1,22 @@
-version: '2.1'
+version: 2.1
+
 orbs:
-  node: circleci/node@5.0.3
+  node: circleci/node@x.y
+
 jobs:
-  test:
+  install-node-example:
-    executor:
+    docker:
-      name: node/default
+      - image: cimg/base:stable
-      tag: '16'
     steps:
       - checkout
-      - node/install-packages:
+      - node/install:
-          pkg-manager: yarn
+          install-yarn: true
-      - run:
+          node-version: '16.17'
-          command: yarn run test
+      - run: node --version
-          name: Run YARN tests
+workflows:
+  test_my_app:
+    jobs:
+      - install-node-example
+
+