update gh actions to v3

.github/workflows/build.yml

@@ -7,10 +7,10 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
-          node-version: 12
+          node-version: lts/*
       - run: npm ci
       - run: npm run jslint
       - run: npm test

.github/workflows/publish.yml

@@ -12,10 +12,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
-          node-version: '12.x'
+          node-version: lts/*
           registry-url: 'https://registry.npmjs.org'
       - run: npm install
       - run: npm publish --access public