update release metadata

Author: kolunmi

data/io.github.kolunmi.Bazaar.metainfo.xml.in

@@ -64,6 +64,16 @@
   </screenshots>
 
   <releases>
+    <release version="0.5.8" date="2025-10-29">
+      <url type="details">https://github.com/kolunmi/bazaar/releases/tag/v0.5.8</url>
+      <description translate="no">
+        <p>This release comes with the following improvements:</p>
+        <ul>
+          <li>Fix slow/inconsistent image loading</li>
+          <li>Fix context row in full view</li>
+        </ul>
+      </description>
+    </release>
     <release version="0.5.7" date="2025-10-27">
       <url type="details">https://github.com/kolunmi/bazaar/releases/tag/v0.5.7</url>
       <description translate="no">