Manual bump metainfo version (meshtastic#7049)

Author: vidplace7

bin/org.meshtastic.meshtasticd.metainfo.xml

@@ -87,6 +87,9 @@
   </screenshots>
 
   <releases>
+    <release version="2.6.12" date="2025-06-15">
+      <url type="details">https://github.com/meshtastic/firmware/releases?q=tag%3Av2.6.12</url>
+    </release>
     <release version="2.6.11" date="2025-06-02">
       <url type="details">https://github.com/meshtastic/firmware/releases?q=tag%3Av2.6.11</url>
     </release>