feat: Use vitest instead of jest, run all the specs anywhere in app/ folder in the CI (#9722)

Due to the pattern `**/specs/*.spec.js` defined in CircleCI, none of the
frontend spec in the folders such as
`specs/<domain-name>/getters.spec.js` were not executed in Circle CI.

This PR fixes the issue, along with the following changes: 
- Use vitest instead of jest
- Remove jest dependancies
- Update tests to work with vitest

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/dashboard/components/specs/SidemenuIcon.spec.js

@@ -1,5 +1,5 @@
 import { shallowMount } from '@vue/test-utils';
-import SidemenuIcon from '../SidemenuIcon';
+import SidemenuIcon from '../SidemenuIcon.vue';
 
 describe('SidemenuIcon', () => {
   test('matches snapshot', () => {