ci(core): Reduce memory usage in tests (part-2) (no-changelog) (#7671)

This also gets rid of `Db.collection`, which was another source of
circular dependencies.

packages/cli/test/unit/InternalHooks.test.ts

@@ -1,6 +1,6 @@
 import { Telemetry } from '@/telemetry';
 import { InternalHooks } from '@/InternalHooks';
-import { mockInstance } from '../integration/shared/utils';
+import { mockInstance } from '../shared/mocking';
 import type { IDiagnosticInfo } from '@/Interfaces';
 import { mock } from 'jest-mock-extended';