NG-UI Update nginx for CVE

Security patch 1.14.0-0ubuntu1.9 has been issued

Fixes BUG-1555

Change-Id: I61811a6a1494138b4715dfcbf4c7959e10916ba4
Signed-off-by: beierlm <mark.beierl@canonical.com>
(cherry picked from commit f6ec22e2)