🏷️(frontend) adapt typing with recent upgrade

An upgrade to @sentry/nextjs@8.42.0 changed
some typing. It is not from @sentry/types but
from @sentry/core now.

src/frontend/apps/impress/src/stores/useSentryStore.tsx

@@ -1,5 +1,5 @@
+import type { Client } from '@sentry/core';
 import * as Sentry from '@sentry/nextjs';
-import type { Client } from '@sentry/types';
 import { create } from 'zustand';
 
 import packageJson from '../../package.json';