Bump zod from 3.25.76 to 4.1.5

Bumps [zod](https://github.com/colinhacks/zod) from 3.25.76 to 4.1.5.
- [Release notes](https://github.com/colinhacks/zod/releases)
- [Commits](colinhacks/zod@v3.25.76...v4.1.5)

---
updated-dependencies:
- dependency-name: zod
  dependency-version: 4.1.5
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -81,7 +81,7 @@
     "tailwind-merge": "^2.6.0",
     "tailwindcss-animate": "^1.0.7",
     "vaul": "^1.1.2",
-    "zod": "^3.25.76"
+    "zod": "^4.1.8"
   },
   "devDependencies": {
     "@chainsafe/cypress-polkadot-wallet": "^2.3.0",