Drop old Node.js versions

Author: tkrotoff

.github/workflows/node.js.yml

@@ -11,7 +11,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 16.x]
+        node-version: [18.x]
 
     steps:
       - uses: actions/checkout@v2

.github/workflows/npm-publish.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: 14
+          node-version: 18
       - run: npm ci
       - run: npm run lint
       - run: npm run build
@@ -25,7 +25,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: 14
+          node-version: 18
           registry-url: https://registry.npmjs.org/
       - run: npm ci
       - run: npm publish --access public