no longer test against node 12, add tests against node 18, and use node 18 as default

.github/workflows/github-actions-demo.yml

@@ -7,10 +7,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Install Node.js 14
+      - name: Install Node.js 18
         uses: actions/setup-node@v2
         with:
-          node-version: 14.x
+          node-version: 18.x
           cache: 'npm'
       - run: npm ci
       - run: npm run lint
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 16.x]
+        node-version: [14.x, 16.x, 18.x]
     steps:
       - uses: actions/checkout@v2
       - name: Install Node.js ${{ matrix.node-version }}
@@ -36,10 +36,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Install Node.js 14
+      - name: Install Node.js 18
         uses: actions/setup-node@v2
         with:
-          node-version: 14.x
+          node-version: 18.x
           cache: 'npm'
       - name: Install Chrome Stable
         uses: browser-actions/setup-chrome@latest
@@ -51,10 +51,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Install Node.js 14
+      - name: Install Node.js 18
         uses: actions/setup-node@v2
         with:
-          node-version: 14.x
+          node-version: 18.x
           cache: 'npm'
       - run: npm ci
       - run: npm run test:react-native

.github/workflows/publish.yml

@@ -10,7 +10,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: '14.x'
+          node-version: '18.x'
           registry-url: 'https://registry.npmjs.org'
       - run: npm ci
       - run: npm run prepublishOnly