chore(deps-dev): bump vitest from 3.2.4 to 4.1.0

Bumps [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest) from 3.2.4 to 4.1.0.
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Changelog](https://github.com/vitest-dev/vitest/blob/main/docs/releases.md)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.1.0/packages/vitest)

---
updated-dependencies:
- dependency-name: vitest
  dependency-version: 4.1.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

packages/jco/package.json

@@ -96,7 +96,7 @@
         "smol-toml": "^1.4.2",
         "typescript": "^5.9.2",
         "vite": "^7.1.5",
-        "vitest": "^3.2.4",
+        "vitest": "^4.1.0",
         "which": "^2.0.2"
     }
 }

packages/preview3-shim/package.json

@@ -52,6 +52,6 @@
   "devDependencies": {
     "globals": "^16.3.0",
     "vite": "^7.1.5",
-    "vitest": "^3.2.4"
+    "vitest": "^4.1.0"
   }
 }