headless table tests.

Author: T4rk1n

.github/workflows/table-tests.yml

@@ -143,4 +143,4 @@ jobs:
       - name: Run Table Server Tests
         run: |
           cd components/dash-table
-          pytest --nopercyfinalize
+          pytest --nopercyfinalize --headless

components/dash-table/karma.conf.js

@@ -17,7 +17,7 @@ module.exports = config => {
             'tests/js-unit/**/*.ts' // *.tsx for React Jsx
         ],
         reporters: ["progress"],
-        browsers: ["Chrome"],
+        browsers: ["ChromeHeadless"],
         webpack: require('./webpack.test.config')
     });
 }