Update windows-chewing-tsf release info metadata

Author: kanru

releases/im.chewing.windows_chewing_tsf.releases.xml

@@ -1,7 +1,7 @@
 <releases>
   <!-- https://www.freedesktop.org/software/appstream/docs/sect-Metadata-Releases.html -->
-  <release version="26.4.0.520" date="2026-03-24" type="development">
-    <url>https://codeberg.org/chewing/windows-chewing-tsf/releases/tag/nightly-26.4.0.520</url>
+  <release version="26.4.0.521" date="2026-03-26" type="development">
+    <url>https://codeberg.org/chewing/windows-chewing-tsf/releases/tag/nightly-26.4.0.521</url>
   </release>
   <release version="26.1.3.0" date="2026-01-25" type="stable">
     <url>https://codeberg.org/chewing/windows-chewing-tsf/releases/tag/v26.1.3.0</url>