gtksourceview: Update version from 3.24.11 to 4.4.0

gedit actually requires gtksourceview-4. Only gedit depends on
libgtksourceview, so do the major update without a compatibilty
package.

gtksourceview.be0

@@ -1,6 +1,6 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION gtksourceview-3.24.11-0
+# BEE_VERSION gtksourceview-4.4.0-0
 
 ## 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.)