ci: fix build

Author: dunglas

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
   build:
     strategy:
       matrix:
-        node-version: [14.x, 15.x]
+        node-version: ['14', '15']
 
     runs-on: ubuntu-latest
     steps:

.github/workflows/npm.yml

@@ -9,12 +9,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - name: Build Node.js 15.x
-      uses: actions/setup-node@v1
+    - uses: actions/setup-node@v1
       with:
-        node-version: '15.x'
+        node-version: '15'
         registry-url: 'https://registry.npmjs.org'
     - run: npm install
+    - run: npm build
     - run: npm publish
       env:
         NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}