Update test workflow

Author: IvanKiral

.github/workflows/test.yml

@@ -3,15 +3,12 @@ on: [pull_request]
 jobs:
   build:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node-version: [14.x]
     steps:
     - uses: actions/checkout@v2
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
+    - name: Use Node.js
+      uses: actions/setup-node@v2
       with:
-        node-version: ${{ matrix.node-version }}
+        node-version-file: '.nvmrc'
     - run: npm i
     - run: npm run lint
     - run: npm run build

.nvmrc

@@ -0,0 +1 @@
+lts/*