devel/upnp: update to 1.14.29

Changes: https://github.com/pupnp/pupnp/releases/tag/release-1.14.29
Changes: https://github.com/pupnp/pupnp/releases/tag/release-1.14.28
Changes: https://github.com/pupnp/pupnp/releases/tag/release-1.14.27
Changes: https://github.com/pupnp/pupnp/releases/tag/release-1.14.26