chore: bump version to 5.0.20

* fix: will clear the shortcuts

Author: zsien

debian/changelog

@@ -1,3 +1,9 @@
+deepin-fcitx5configtool-plugin (5.0.20) unstable; urgency=medium
+
+  * fix: will clear the shortcuts
+
+ -- zsien <quezhiyong@deepin.org>  Fri, 15 Mar 2024 10:34:06 +0800
+
 deepin-fcitx5configtool-plugin (5.0.19) unstable; urgency=medium
 
   * fix: shortcut of "Scroll bewteen input methods" is wrong