build(deps-dev): bump vitest from 1.6.1 to 4.1.0 in /kms/auth-mock

Bumps [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest) from 1.6.1 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]

kms/auth-mock/package.json

@@ -26,7 +26,7 @@
     "openapi-types": "12.1.3",
     "oxlint": "0.9.10",
     "typescript": "5.8.3",
-    "vitest": "1.6.1"
+    "vitest": "4.1.0"
   },
   "type": "module"
 }