chore: update @vercel/sdk to version 1.19.1 in package.json

Author: 0ski

apps/webapp/package.json

@@ -129,7 +129,7 @@
     "@unkey/cache": "^1.5.0",
     "@unkey/error": "^0.2.0",
     "@upstash/ratelimit": "^1.1.3",
-    "@vercel/sdk": "^1.18.10",
+    "@vercel/sdk": "^1.19.1",
     "@whatwg-node/fetch": "^0.9.14",
     "ai": "^4.3.19",
     "assert-never": "^1.2.1",