chore: Update version to 6.0.12

As title.

Log: Update version to 6.0.12

Author: wangrong1069

debian/changelog

@@ -1,3 +1,10 @@
+deepin-diskmanager (6.0.12) unstable; urgency=medium
+
+  * fix: Fix fail to get info from some USB device
+  * fix: Fix disk interface display abnormality
+
+ -- wangrong <wangrong@uniontech.com>  Thu, 07 Aug 2025 20:12:39 +0800
+
 deepin-diskmanager (6.0.11) unstable; urgency=medium
 
   * fix: Fix incomplete retrieval of disk hardware information