Log Message:
Update tigervnc from 1.12.0 to 1.13.1

Changes in 1.13.0:

 - The servers and native viewer now support RealVNC's RSA-AES authentication \ 
methods and encryption
 - The native viewer is now translated to Romanian and Georgian
 - The native viewer now (optionally) supports PiKVM's H.264 encoding
 - The display settings for the native viewer have been overhauled to make them \ 
easier to understand
 - The native viewer now supports adding exceptions for expired certificates
 - Resolved an issue where full-screen mode didn't work in the native viewer on \ 
macOS 13
 - Lock key synchronization has been re-enabled in the native viewer after being \ 
accidentally disabled in 1.11.0
 - Xvnc/libvnc.so can now be built with Xorg 1.21
 - x0vncserver is a bit better at handling differing server and client keyboard \ 
layout
 - x0vncserver now correctly handles zaphod mode
 - Added Ubuntu 22.04 and RHEL 9 packages

Changes in 1.13.1:

 - x0vncserver can either crash itself, or crash the X server it is connected to
 - The servers might crash if the clipboard is updated just as a client is connected
 - The vncserver service can fail to start on SELinux system if ~/.vnc doesn't exist

pkgsrc changes:

 - Drop no longer needed patch-unix_vncserver_vncsession.c
 - Add workaround (hack) for NetBSD native libXfont2 builtin issue