ci(github): remove workflow before deprecation and improve current

.github/workflows/main.yml

@@ -0,0 +1,28 @@
+name: CI
+
+on: push
+
+jobs:
+  build_test_lint:
+    name: Node ${{ matrix.node_version }} and ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        node_version: ['8.16', 10, 12] # Node 8 version fix due to https://github.com/actions/setup-node/issues/27
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js ${{ matrix.node_version }}
+      uses: actions/setup-node@v1
+      with:
+        version: ${{ matrix.node_version }}
+    - name: Install
+      run: yarn install --frozen-lockfile
+    - name: Build
+      run: yarn build
+    - name: Lint
+      run: yarn lint

.github/workflows/nodejs.yml

@@ -1,28 +0,0 @@
-name: Node CI
-
-on: [push]
-
-jobs:
-  ci:
-    name: Test on node ${{ matrix.node_version }} and ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        node_version: [8, 10, 12]
-        os: [ubuntu-latest, windows-latest, macOS-latest]
-
-    steps:
-    - uses: actions/checkout@v1
-    - name: Use Node.js ${{ matrix.node_version }}
-      uses: actions/setup-node@v1
-      with:
-        version: ${{ matrix.node_version }}
-
-    - name: Use Yarn 1.17.2
-      run: |
-        npm install -g yarn@1.17.2    
-    - name: yarn build
-      run: |
-        yarn install
-        yarn lint
-        yarn build