chore(example): sync lockfile to 0.9.0

Author: medz

example/pubspec.lock

@@ -198,7 +198,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.8.0"
+    version: "0.9.0"
   unstory:
     dependency: transitive
     description: