Remove test job from windows runner (chartjs#730)

* Remove test job from windows runner

* removes coveralls for windows

.github/workflows/ci.yml

@@ -27,19 +27,21 @@ jobs:
         npm ci
         npm run build
         if [ "${{ runner.os }}" == "Windows" ]; then
-          npm test
+          npm run lint
         else
           xvfb-run --auto-servernum npm test
         fi
       shell: bash
     - name: Coveralls Parallel - Chrome
+      if: runner.os != 'Windows'
       uses: coverallsapp/github-action@master
       with:
         github-token: ${{ secrets.github_token }}
         path-to-lcov: './coverage/chrome/lcov.info'
         flag-name: ${{ matrix.os }}-chrome
         parallel: true
     - name: Coveralls Parallel - Firefox
+      if: runner.os != 'Windows'
       uses: coverallsapp/github-action@master
       with:
         github-token: ${{ secrets.github_token }}