Update changelog for 3.24.27-1pureos4 release

debian/changelog

+gtk+3.0 (3.24.27-1pureos4) byzantium; urgency=medium
+
+  [ Guido Günther ]
+  * Update gtkapplication-dbus-Fetch-inital-screen-saver-state-async.patch
+
+  [ Alexander Mikhaylenko ]
+  * d/patches: Organize into directories
+  * d/patches: Bring back file chooser columns on desktop
+
+ -- Alexander Mikhaylenko <alexander.mikhaylenko@puri.sm>  Fri, 13 Aug 2021 18:25:44 +0500
+
 gtk+3.0 (3.24.27-1pureos3) byzantium; urgency=medium
 
   * gdk/wayland: Take transform into account when setting physical size