fix(deps): remove deprecated hast dep (#322)

Author: escwxyz

packages/streamdown/package.json

@@ -54,7 +54,6 @@
   },
   "dependencies": {
     "clsx": "^2.1.1",
-    "hast": "^1.0.0",
     "hast-util-to-jsx-runtime": "^2.3.6",
     "html-url-attributes": "^3.0.1",
     "lucide-react": "^0.560.0",