Use NodeJS 18 LTS as default runtime

.github/workflows/check-dist.yml

@@ -23,10 +23,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set Node.js 16.x
-        uses: actions/setup-node@v3
+      - name: Set Node.js
+        uses: actions/setup-node@v4
         with:
-          node-version: 16.x
+          node-version-file: '.nvmrc'
 
       - name: Install dependencies
         run: npm ci

.github/workflows/ci.yml

@@ -14,7 +14,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - run: node --version
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: '.nvmrc'
       - run: npm ci
       - run: npm run build
       - run: npm run format-check