upgrade CI to node 18 LTS

.github/workflows/nodejs.yml

@@ -5,15 +5,15 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - name: Use Node.js 12.x
-      uses: actions/setup-node@v1
-      with:
-        node-version: 12.x
-    - name: npm install, build, and test
-      run: |
-        npm install
-        npm run build --if-present
-        npm test
-      env:
-        CI: true
+      - uses: actions/checkout@v2
+      - name: Use Node.js 18.x
+        uses: actions/setup-node@v1
+        with:
+          node-version: 18.x
+      - name: npm install, build, and test
+        run: |
+          npm install
+          npm run build --if-present
+          npm test
+        env:
+          CI: true

.github/workflows/publish.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 14
+          node-version: 18
           registry-url: https://registry.npmjs.org/
           cache: npm
       - run: npm ci