chore(deps): update vitest monorepo to v4

Author: renovate[bot]

packages/svelte/package.json

@@ -66,8 +66,8 @@
     "@types/eslint": "9.6.1",
     "@types/eslint-config-prettier": "^6.11.3",
     "@types/eslint__js": "^9.0.0",
-    "@vitest/coverage-v8": "^3.0.5",
-    "@vitest/ui": "^3.0.5",
+    "@vitest/coverage-v8": "^4.0.0",
+    "@vitest/ui": "^4.0.0",
     "eslint": "^9.2.0",
     "eslint-config-prettier": "^10.0.0",
     "eslint-plugin-playwright": "^2.0.0",

packages/vanilla/package.json

@@ -50,8 +50,8 @@
     "@types/eslint": "9.6.1",
     "@types/eslint-config-prettier": "^6.11.3",
     "@types/eslint__js": "^9.0.0",
-    "@vitest/coverage-v8": "^3.0.5",
-    "@vitest/ui": "^3.0.5",
+    "@vitest/coverage-v8": "^4.0.0",
+    "@vitest/ui": "^4.0.0",
     "eslint": "^9.2.0",
     "eslint-config-prettier": "^10.0.0",
     "execa": "^9.4.0",