Refactor CI version

Resolves

```
Input 'version' has been deprecated with message: The version property will not be supported after October 1, 2019. Use node-version instead
```

.github/workflows/ci.yml

@@ -6,19 +6,19 @@ on:
     branches: [master]
 jobs:
   build-and-test:
-    name: '${{ matrix.platform }}: node.js ${{ matrix.nodejs-version }}'
+    name: '${{ matrix.platform }}: node.js ${{ matrix.node-version }}'
     strategy:
       matrix:
         platform: [ubuntu-latest, windows-latest, macos-latest]
-        nodejs-version: [10, 12]
+        node-version: [10, 12]
     runs-on: ${{ matrix.platform }}
     steps:
       - name: Checkout
         uses: actions/checkout@master
       - name: Set up Node.js
         uses: actions/setup-node@master
         with:
-          version: ${{ matrix.nodejs-version }}
+          node-version: ${{ matrix.node-version }}
       - name: Build and test
         run: |
           npm install