aurweb: add moson's GPG for tagging releases

Signed-off-by: Leonidas Spyropoulos <artafinde@archlinux.org>

roles/aurweb/defaults/main.yml

@@ -9,7 +9,7 @@ aurweb_git_dir: "{{ aurweb_dir }}/aur.git"
 aurweb_git_hook: '/usr/local/bin/aurweb-git-update'
 aurweb_nginx_conf: '/etc/nginx/nginx.d/aurweb.conf'
 aurweb_version: 'v6.2.7'
-aurweb_pgp_keys: ['B4B759625D4633430B74877059E43E106B247368', 'DB650286BD9EAE39890D3FE6FE3DC1668CB24956']
+aurweb_pgp_keys: ['B4B759625D4633430B74877059E43E106B247368', 'DB650286BD9EAE39890D3FE6FE3DC1668CB24956', 'D5AD89388A7C6C9C22E790994A4760AB4EE15296']
 
 aurweb_db: 'aur'
 aurweb_db_host: 'localhost'