Update actions and node version

Node.js 12 runtime actions are deprecated.
Update the following actions to use Node.js 16 runtime:
- actions/checkout@v2 => actions/checkout@v3
- actions/setup-node@v2 => actions/setup-node@v3

For more information see:
- https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/
- https://github.com/actions/checkout/releases/tag/v3.0.0
- https://github.com/actions/setup-node/releases/tag/v3.0.0

.github/workflows/test.yml

@@ -7,12 +7,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install nodejs
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v3
         with:
-          node-version: 14.x
+          node-version: 16.x
 
       - name: Run tests
         run: |