Update dependency vitest to v2

Author: renovate[bot]

package.json

@@ -13,7 +13,7 @@
     "prettier": "^2.8.7",
     "typescript": "^5.3.0",
     "vite-tsconfig-paths": "^4.0.7",
-    "vitest": "^1.6.0"
+    "vitest": "^2.0.0"
   },
   "scripts": {
     "exercise": "tt-cli run",