chore(deps-dev): bump vitest from 3.2.4 to 4.0.3

Bumps [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest) from 3.2.4 to 4.0.3.
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.0.3/packages/vitest)

---
updated-dependencies:
- dependency-name: vitest
  dependency-version: 4.0.3
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

packages/nuqs-svelte/package.json

@@ -112,7 +112,7 @@
     "typescript": "^5.0.0",
     "typescript-eslint": "^8.46.1",
     "vite": "^7.1.1",
-    "vitest": "^3.2.2"
+    "vitest": "^4.0.3"
   },
   "dependencies": {
     "mitt": "^3.0.1"