test(sidebar): fix test by using "act" directly from @testing-library…

…/react

after upgrading @babel/runtime it needs to us that specific version of "act"

fix #49

src/app/components/common/Sidebar/Sidebar.test.tsx

@@ -1,6 +1,5 @@
 import React, { ReactElement } from 'react';
-import { act } from 'react-test-renderer';
-import { render, cleanup, fireEvent, RenderResult } from '@testing-library/react';
+import { render, cleanup, fireEvent, RenderResult, act } from '@testing-library/react';
 
 import Sidebar from './Sidebar';