net/gupnp-av: Backport upstream fixes
- Fix Requires: line of pkg-config file [1]
- Fix build with libxml2 2.11+ [2][3][4]
- Bump PORTREVISION for package change
PR: 275865
Submitted by: diizzy
Obtained from: https://gitlab.gnome.org/GNOME/gupnp-av/-/commit/767388bc16e08d4e1e1f419555165cc1816be931 [1]
https://gitlab.gnome.org/GNOME/gupnp-av/-/commit/bff65db081ee1ee5df0a42231ebf8e8fbb27cccf [2] https://gitlab.gnome.org/GNOME/gupnp-av/-/commit/9557768121d54fdcedabe7544863515d6a813354 [3] https://gitlab.gnome.org/GNOME/gupnp-av/-/commit/1e10a41fcef6ae0d3e89958db89bc22398f3b4f1 [4]