fixed workflow

Author: Elius94

.github/workflows/release-package.yml

@@ -11,18 +11,24 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        node: [12, 14]
+        os: [ubuntu-latest, windows-latest]
+
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: 12
+          node-version: ${{ matrix.node }}
 
       - name: Run ci
         run: npm ci
 
       - name: Run tests
-        run: npm run coverage
+        run: npm run test-cov
 
       - name: Coveralls
         uses: coverallsapp/github-action@master

package.json

@@ -5,7 +5,8 @@
     "main": "index.js",
     "scripts": {
         "test": "mocha",
-        "coverage": "nyc npm test && nyc report --reporter=text-lcov | coveralls"
+        "test-cov": "nyc npm test",
+        "test-coveralls": "nyc npm test && nyc report --reporter=text-lcov | coveralls"
     },
     "repository": {
         "type": "git",