chore: lock node version for lint ci task

Author: kaisermann

.github/workflows/ci.yml

@@ -8,14 +8,16 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - uses: actions/setup-node@v2
+        with:
+          node-version: 14
       - uses: bahmutov/npm-install@v1
       - run: 'npm run lint'
 
   Tests:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        node-version: [10, 12]
+        node-version: [10, 12, 14]
         os: [ubuntu-latest, windows-latest, macOS-latest]
 
     steps: