gtk3: Update version from 3.24.10 to 3.24.11

From the [news][1]:

> Overview of Changes in GTK+ 3.24.11
> ===================================
>
> * Adwaita:
>  - Add drop shadow to icons
>  - Small color fixes
>  - Make title buttons round
>
> * OS X: Fix the monitors-changed signal
>
> * Win32:
>  - Build fixes
>  - Support choices in the native file chooser
>  - Fix icon cache freshness checks on 64bit
>
> * Wayland:
>  - Support xdg-output v3
>  - Fix clipboard ownership handling
>
> * X11: Improve monitor metadata
>
> * Build: Require GLib 2.57.2

[1]: https://ftp.gnome.org/pub/gnome/sources/gtk+/3.24/gtk+-3.24.11.news

gtk3.be0

@@ -1,6 +1,6 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION gtk3-3.24.10-0
+# BEE_VERSION gtk3-3.24.11-0
 
 ## this file was created by bee init and should be executed to build a
 ## bee-package. (Additional hints are located at the end of this file.)