Update CI: modern Node versions, fix macOS ARM64 compat

- Drop EOL Node.js 10.x and 12.x from matrix
- Add Node.js 18.x and 20.x
- Update actions/checkout and actions/setup-node to v4
- Only trigger on 2.x branch

Author: clutz-bot[bot]

.github/workflows/test.yml

@@ -1,40 +1,35 @@
-name: Node CI
+name: Test
 
-on: [push]
+on:
+  push:
+    branches: [2.x]
+  pull_request:
+    branches: [2.x]
 
 jobs:
-  build:
+  test:
     name: Test Node.js ${{ matrix.node-version }} on ${{ matrix.os }}
 
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        node-version: [10.x, 12.x, 14.x, 16.x]
+        node-version: [14.x, 16.x, 18.x, 20.x]
 
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v1
-
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
-      with:
-        node-version: ${{ matrix.node-version }}
-
-    - name: Print Node.js Version
-      run: node --version
-
-    - name: Install Dependencies
-      run: npm install
-      env:
-        CI: true
-
-    - name: Run "build" step
-      run: npm run build --if-present
-      env:
-        CI: true
-
-    - name: Run tests
-      run: npm test
-      env:
-        CI: true
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Install Dependencies
+        run: npm install
+
+      - name: Build
+        run: npm run build --if-present
+
+      - name: Test
+        run: npm test