Update jest.setup.ts

Author: bbimber

jbrowse/src/client/test/jest.setup.ts

@@ -1,5 +1,5 @@
 import 'regenerator-runtime/runtime';
 import { configure } from 'enzyme';
-import Adapter from 'enzyme-adapter-react-16';
+import Adapter from 'enzyme-adapter-react-17';
 
-configure({ adapter: new Adapter() });
+configure({ adapter: new Adapter() });