.github: Add sys-libs/libsemanage to automation

Author: krnowak

.github/workflows/portage-stable-packages-list

@@ -727,6 +727,7 @@ sys-libs/libcap-ng
 sys-libs/libnvme
 sys-libs/libseccomp
 sys-libs/libselinux
+sys-libs/libsemanage
 sys-libs/libsepol
 sys-libs/libunwind
 sys-libs/liburing