update conf.archlinux.org

Update to the 2019 conference report

roles/conf.archlinux.org/defaults/main.yml

@@ -2,6 +2,7 @@
 
 conference_user: confweb
 conference_git: https://github.com/archlinux/conf.archlinux.org.git
+conference_version: 77f0590130b5a3f0961614220c8edf0b01a3c0d1
 conference_domain: conf.archlinux.org
 static_conference_domain: static.conf.archlinux.org
 conference_dir: /srv/http/{{ conference_domain }}

roles/conf.archlinux.org/tasks/main.yml

@@ -10,7 +10,7 @@
   git: >
     repo={{ conference_git }}
     dest="{{ conference_dir }}"
-    version=8fe1b86d2a13a8c8227027e310f1708c7cfc1c1a
+    version={{ conference_version }}
   register: release
 
 - name: fix home permissions