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/api/enterprise/specs/account.spec.js

@@ -15,10 +15,10 @@ describe('#enterpriseAccountAPI', () => {
   describe('API calls', () => {
     const originalAxios = window.axios;
     const axiosMock = {
-      post: jest.fn(() => Promise.resolve()),
-      get: jest.fn(() => Promise.resolve()),
-      patch: jest.fn(() => Promise.resolve()),
-      delete: jest.fn(() => Promise.resolve()),
+      post: vi.fn(() => Promise.resolve()),
+      get: vi.fn(() => Promise.resolve()),
+      patch: vi.fn(() => Promise.resolve()),
+      delete: vi.fn(() => Promise.resolve()),
     };
 
     beforeEach(() => {