chore(deps): update devdependency vitest to v2 (#797)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -97,7 +97,7 @@
     "tsd": "^0.31.2",
     "typescript": "5.6.2",
     "vite": "^5.4.8",
-    "vitest": "^1.6.0",
+    "vitest": "^2.1.1",
     "yorkie": "^2.0.0"
   },
   "peerDependencies": {