net/tigervnc-*: Update to 1.14.0

Changes: https://github.com/TigerVNC/tigervnc/releases/tag/v1.14.0

A prominent change that affects FreeBSD port is:

• The viewers and servers now follow the XDG Base Directory Specification, like "~/.config", for storing files in the home directory. Existing users will continue using the legacy "~/.vnc" directory, but new users will get the XDG directories.

While here,

• Adjust BUILD_DEPENDS and LIB_DEPENDS reported in stage-qa