chore(deps): update dependency vitest to v4

Author: renovate[bot]

package.json

@@ -57,7 +57,7 @@
     "typescript": "^5.9.2",
     "typescript-eslint": "^8.41.0",
     "vite": "^7.1.4",
-    "vitest": "^3.2.4"
+    "vitest": "^4.0.0"
   },
   "lint-staged": {
     "*.{js,ts,svelte,html,md,svx}": "eslint --cache --fix",

packages/e2e-tests/package.json

@@ -5,7 +5,7 @@
   "devDependencies": {
     "css-color-names": "^1.0.1",
     "tree-kill": "^1.2.2",
-    "vitest": "^3.2.4"
+    "vitest": "^4.0.0"
   },
   "type": "module"
 }