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:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

docs/package.json

@@ -15,6 +15,6 @@
     "astro": "^5.16.0",
     "sharp": "^0.34.5",
     "typescript": "^5.9.3",
-    "zod": "^3.25.76"
+    "zod": "^4.2.1"
   }
 }

package.json

@@ -62,7 +62,7 @@
     "uuidv7-js": "^1.1.4",
     "x-forwarded-fetch": "^0.2.0",
     "xss": "^1.0.15",
-    "zod": "^4.1.13"
+    "zod": "^4.2.1"
   },
   "devDependencies": {
     "@biomejs/biome": "^2.3.10",