build(deps-dev): Bump zod from 3.25.76 to 4.2.1

Bumps [zod](https://github.com/colinhacks/zod) from 3.25.76 to 4.2.1.
- [Release notes](https://github.com/colinhacks/zod/releases)
- [Commits](colinhacks/zod@v3.25.76...v4.2.1)

---
updated-dependencies:
- dependency-name: zod
  dependency-version: 4.2.1
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -69,7 +69,7 @@
     "typescript": "5.9.3",
     "vite": "7.3.0",
     "vitest": "4.0.15",
-    "zod": "3.25.76"
+    "zod": "4.2.1"
   },
   "type": "module",
   "dependencies": {