Switch to new React render API

Fixes warning: ReactDOM.render is no longer supported in React 18. Use createRoot instead. Until you switch to the new API, your app will behave as if it's running React 17. Learn more: https://reactjs.org/link/switch-to-createroot

Author: Brendan Mulholland

src/index.tsx

@@ -1,9 +1,11 @@
+import { createRoot } from 'react-dom/client';
 import * as React from 'react';
-import * as ReactDOM from 'react-dom';
 
 import 'tailwindcss/tailwind.css';
 import 'nprogress/nprogress.css';
 
 import { App } from './app';
 
-ReactDOM.render(<App />, document.getElementById('gitify'));
+const container = document.getElementById('gitify')
+const root = createRoot(container);
+root.render(<App />);