Add AI Humanizer to sponsor metadata (#755)

* Add AI Humanizer to sponsor metadata

* ci: apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

Author: KamranKhan11

src/utils/gh-sponsor-meta.json

@@ -5,6 +5,12 @@
     "imageUrl": "https://ai-text-humanizer.com/gfx/ai-text-humanizer-com-icon-2025-small.png",
     "linkUrl": "https://ai-text-humanizer.com/?utm_source=tanstack"
   },
+  {
+    "login": "aihumanizer-io",
+    "name": "AI Humanizer",
+    "imageUrl": "https://aihumanizer.io/favicon.ico",
+    "linkUrl": "https://aihumanizer.io"
+  },
   {
     "login": "rewriterprojs",
     "name": "humanizer",