chore: bump version to 2.0.13

update changelog to 2.0.13

Author: fly602

debian/changelog

@@ -1,3 +1,9 @@
+dde-session (2.0.13) unstable; urgency=medium
+
+  * feat: add OOM score adjustment tool for critical DDE services
+
+ -- fuleyi <[email protected]>  Fri, 19 Dec 2025 13:28:27 +0800
+
 dde-session (2.0.12) unstable; urgency=medium
 
   * feat: 移除dde-login-reminder, 迁移到dde-session-ui中