chore(deps): bump zod from 3.25.76 to 4.4.3 in /frontend

Bumps [zod](https://github.com/colinhacks/zod) from 3.25.76 to 4.4.3.
- [Release notes](https://github.com/colinhacks/zod/releases)
- [Commits](colinhacks/zod@v3.25.76...v4.4.3)

---
updated-dependencies:
- dependency-name: zod
  dependency-version: 4.4.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/package.json

@@ -40,7 +40,7 @@
         "vue-router": "5.0.6",
         "vue-sonner": "^2.0.9",
         "vuedraggable": "^4.1.0",
-        "zod": "3.25.76"
+        "zod": "4.4.3"
     },
     "devDependencies": {
         "@biomejs/biome": "^2.4.13",