chore(deps): update dependency typescript to v6

Author: renovate[bot]

frontend/package.json

@@ -36,7 +36,7 @@
     "jsdom": "^29.0.1",
     "npm-run-all2": "^7.0.2",
     "prettier": "3.8.1",
-    "typescript": "~5.9.3",
+    "typescript": "~6.0.0",
     "vite": "^6.4.1",
     "vitest": "^4.1.2",
     "vue-tsc": "^2.2.12"