chore: update ci config

remove build matrix since there isn't any platform specific code

Author: jamesgeorge007

.github/workflows/node.js.yml

@@ -1,27 +1,19 @@
-# This workflow will do a clean install of node dependencies, build the source code and run tests across different versions of node
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
-
-name: Node.js CI
+name: CI
 
 on: [push, pull_request]
 
 jobs:
   build:
-    name: Tests - ${{ matrix.os }} - Node.js v${{ matrix.node-version }}
-
-    runs-on: ${{ matrix.os }}
+    name: Generate build and check code formatting
 
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest]
-        node-version: [12.x, 13.x, 14.x]
+    runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
-      with:
-        node-version: ${{ matrix.node-version }}
-    - run: npm ci
-    - run: npm run format:check
-    - run: npm run build
+      - uses: actions/checkout@v2
+      - name: Use Node.js 12.x
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - run: npm ci
+      - run: npm run format:check
+      - run: npm run build