Update Gai version 1.2.1 (#3496)

* Update Gai version 1.2.0

  <release version="1.2.0" date="2025-06-25"> 
      <description translate="no"> 
        <ul> 
          <li>support Gemini 2.5 Flash dynamic thinking.</li>
          <li>support Gemini 2.0 Flash preview image generation.</li>
          <li>remove Gemini 1.5 models are now discontinued.</li>
        </ul>
      </description>
    </release>

* Update Gai version 1.2.1

version:1.2.1, build in ubuntu 22.04
date:2025-06-29

support Gemini 2.5 Flash dynamic thinking.
support Gemini 2.0 Flash preview image generation.
remove Gemini 1.5 models are now discontinued.

* Trigger re-test

---------

Co-authored-by: probonopd <[email protected]>

Author: huanguan1978

data/Gai

@@ -1 +1,2 @@
-https://webpath.iche2.com/release/Gai-1.0.0-x86_64.AppImage
+https://webpath.iche2.com/release/Gai-1.2.1-x86_64.AppImage
+#