chore: bump package version to 2.5.1

Author: paulkr

package-lock.json

@@ -1,6 +1,6 @@
 {
     "name": "@picahq/ai",
-    "version": "2.5.0",
+    "version": "2.5.1",
     "description": "Pica AI SDK for Vercel AI SDK integration",
     "main": "dist/index.js",
     "types": "dist/index.d.ts",
@@ -32,4 +32,4 @@
         "typescript": "^5.7.3"
     },
     "type": "commonjs"
-}
+}