update appstream metadata for release

Author: kolunmi

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

@@ -57,6 +57,19 @@
   </screenshots>
 
   <releases>
+    <release version="0.5.6" date="2025-10-15">
+      <url type="details">https://github.com/kolunmi/bazaar/releases/tag/v0.5.6</url>
+      <description translate="no">
+        <p>This release comes with the following improvements:</p>
+        <ul>
+          <li>Add interactive screenshot dialog</li>
+          <li>Fix empty update dialogs</li>
+          <li>Greatly improve look of app description rendering</li>
+          <li>Add pending state to the global progress bar</li>
+          <li>Add featured apps carousel</li>
+        </ul>
+      </description>
+    </release>
     <release version="0.5.5" date="2025-10-09">
       <url type="details">https://github.com/kolunmi/bazaar/releases/tag/v0.5.5</url>
       <description translate="no">