libs/libupnp: fix PKG_CPE_ID
pupnp_project:pupnp is a better CPE ID than libupnp_project:libupnp as
this CPE ID has the latest CVEs from 2021 (whereas
libupnp_project:libupnp only has CVEs up to 2020):
https://nvd.nist.gov/products/cpe/search/results?keyword=cpe:2.3:a:pupnp_project:pupnp
Fixes: 299e5b0a9bce19d6e96cb9ff217028b36ee2dd36 (treewide: add PKG_CPE_ID for better cvescanner coverage)
Signed-off-by: Fabrice Fontaine <[email protected]>
(cherry picked from commit
911d890b119e95ceb39fa28b5edb26e42cfbc0ed)