build: update node versions

- prevent release job from running on forks
- cache npm modules

Author: john-u

.github/workflows/cd.yml

@@ -10,16 +10,17 @@ on:
 
 jobs:
   release:
-    if: "!contains(github.event.head_commit.message, 'skip ci')"
+    # don't run on forks
+    if: github.repository_owner == 'SmartThingsCommunity'
 
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2
       - name: Setup Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
-          node-version: 12.x
+          node-version: 16
       - run: npm ci
       - name: Release
         env:

.github/workflows/ci.yml

@@ -4,21 +4,20 @@ on: [push, pull_request]
 
 jobs:
   build:
-    if: "!contains(github.event.head_commit.message, 'skip ci')"
-
     runs-on: ubuntu-latest
 
     strategy:
       matrix:
         # add/remove versions as we move support forward
-        node-version: [10.x, 12.x]
+        node-version: [12, 14, 16]
 
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
+          cache: 'npm'
       - run: npm ci
       - run: npm run build
       - run: npm run lint