Use Node 16 for CI workflow

.github/workflows/check-dist.yml

@@ -3,7 +3,7 @@
 # `index.js` is the code that will run.
 # For our project, we generate this file through a build process from other source files.
 # We need to make sure the checked-in `index.js` actually matches what we expect it to be.
-name: Check dist/
+name: Check dist directory
 
 on:
   push:

.github/workflows/ci.yml

@@ -11,7 +11,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
+    - name: Set Node.js 16.x
+      uses: actions/setup-node@v2.4.1
+      with:
+        node-version: 16.x
     - run: |
+        npm -v
+        node -v
         npm install
         npm run all
   test: # make sure the action works on a clean machine without building