Release 8.2.1 (#205)

Author: ryonakano

platform-data/data/platform.appdata.xml.in

@@ -11,7 +11,7 @@
   </description>
 
   <releases>
-    <release version="8.2.1" date="2025-06-03" urgency="medium">
+    <release version="8.2.1" date="2025-06-06" urgency="medium">
       <description>
         <p>Platform updates:</p>
         <ul>