feat: update flutter to v3.24 (#865)

README.md

@@ -71,6 +71,11 @@ Visit ✈ [Official Website](https://gopeed.com) | 📖 [Official Docs](https://
             <td><code>IPA</code></td>
             <td><a href="https://gopeed.com/api/download?tpl=Gopeed-$version-ios.ipa">Link</a></td>
         </tr>
+        <tr>
+            <td>Qnap</td>
+            <td><code>QPKG</code></td>
+            <td><a href="https://gopeed.com/api/download?tpl=gopeed-qnap-$version-amd64.qpkg">Link</a></td>
+        </tr>
         <tr>
             <td>Web</td>
             <td></td>
@@ -115,7 +120,7 @@ This project is divided into two parts, the front end uses `flutter`, the back e
 ### Environment
 
 1. Golang 1.23+
-2. Flutter 3.16+
+2. Flutter 3.24+
 
 ### Clone