chore: update changelog

Release 5.7.4.

Author: deepin-ci-robot

debian/changelog

@@ -1,3 +1,11 @@
+dde-qt5platform-plugins (5.7.4) unstable; urgency=medium
+
+  * fix: app crashed when window destroyed in quick
+  * fix: hasVtable is incorrect when destructing
+  * fix: app crashed when window destroyed in quick
+
+ -- Deepin Packages Builder <[email protected]>  Tue, 03 Dec 2024 02:00:46 +0000
+
 dde-qt5platform-plugins (5.7.3) unstable; urgency=medium
 
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