docs: add Zernio gold sponsor

Author: colinhacks

packages/docs/components/gold.tsx

@@ -1,5 +1,13 @@
 export const Gold = () => {
   const companies = [
+    {
+      name: "Zernio",
+      description: "Social APIs for developers and AI agents",
+      logoDark: "https://avatars.githubusercontent.com/u/256836318?v=4",
+      logoLight: "https://avatars.githubusercontent.com/u/256836318?v=4",
+      url: "zernio.com",
+      href: "https://zernio.com/?utm_source=zod",
+    },
     {
       name: "Brand.dev",
       description: "API for logos, colors, and company info",