package/gupnp: security bump to version 1.2.6

Fix CVE-2021-33516: An issue was discovered in GUPnP before 1.0.7 and
1.1.x and 1.2.x before 1.2.5. It allows DNS rebinding. A remote web
server can exploit this vulnerability to trick a victim's browser into
triggering actions against local UPnP services implemented using this
library. Depending on the affected service, this could be used for data
exfiltration, data tempering, etc.

Replace patch by upstream commit as current patch doesn't apply cleanly

https://discourse.gnome.org/t/security-relevant-releases-for-gupnp-issue-cve-2021-33516/6536
https://gitlab.gnome.org/GNOME/gupnp/-/blob/gupnp-1.2.6/NEWS



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>