Update author information

- Changed author name to Taber
- Confirmed email as taber@shopkeeper.dev

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

composer.json

@@ -18,8 +18,8 @@
     },
     "authors": [
         {
-            "name": "Shopkeeper Dev",
-            "email": "dev@example.com"
+            "name": "Taber",
+            "email": "taber@shopkeeper.dev"
         }
     ]
 }