chore: migrate to vitest (#7156)

* chore: jest => vitest

* chore: replace jest-when

server/test/repositories/system-info.repository.mock.ts

@@ -1,7 +1,8 @@
 import { IServerInfoRepository } from 'src/interfaces/server-info.interface';
+import { Mocked, vitest } from 'vitest';
 
-export const newServerInfoRepositoryMock = (): jest.Mocked<IServerInfoRepository> => {
+export const newServerInfoRepositoryMock = (): Mocked<IServerInfoRepository> => {
   return {
-    getGitHubRelease: jest.fn(),
+    getGitHubRelease: vitest.fn(),
   };
 };