[release]: Update Flatpak manifest

Author: mr-cheffy

app.zen_browser.zen.metainfo.xml

@@ -59,7 +59,7 @@
     <control>keyboard</control>
   </supports>
   <releases>
-    <release version="1.13.2b" date="2025-06-16T09:03:28.859Z">
+    <release version="1.13.2b" date="2025-06-17T08:47:43.989Z">
       <url type="details">https://zen-browser.app/release-notes/1.13.2b</url>
     </release>
     <release version="1.13.1b" date="2025-06-15T11:58:40.337Z">