only test against node 14, because that is what vs code uses

Author: mikeebowen

.github/workflows/main.yml

@@ -14,15 +14,14 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
-        node-version: [10.x, 12.x, 14.x]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Install Node.js
         uses: actions/setup-node@v1
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version: 14
       - run: npm install
       - run: xvfb-run -a npm test
         if: runner.os == 'Linux'