build-unit-test-docker: Bump libvncserver

This commit bumps libvncserver to get the revision which sub-tree
recipe indicates:
meta-openembedded/meta-oe/recipes-graphics/libvncserver

There is no issue in real build because this revision was merged
in LibVNCServer-0.9.12 but this fix is required to resolve CI
build issue in:
https://gerrit.openbmc-project.xyz/c/openbmc/obmc-ikvm/+/21483

Change-Id: I23f3265085f180ffe4fea204e67cfed68678c52b
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
diff --git a/build-unit-test-docker.sh b/build-unit-test-docker.sh
index 5bbfb62..8dc5c59 100755
--- a/build-unit-test-docker.sh
+++ b/build-unit-test-docker.sh
@@ -103,9 +103,8 @@
   [lcov]=75fbae1cfc5027f818a0bb865bf6f96fab3202da
   # dev-5.0 2019-05-03
   [linux-headers]=8bf6567e77f7aa68975b7c9c6d044bba690bf327
-  # libvncserver commit dd873fce451e4b7d7cc69056a62e107aae7c8e7a is required for obmc-ikvm
-  # Snapshot from 2018-10-08
-  [libvncserver]=7b1ef0ffc4815cab9a96c7278394152bdc89dc4d
+  # Snapshot from 2019-09-03
+  [libvncserver]=1354f7f1bb6962dab209eddb9d6aac1f03408110
   # version from meta-openembedded/meta-oe/recipes-support/libtinyxml2/libtinyxml2_5.0.1.bb
   [tinyxml2]=37bc3aca429f0164adf68c23444540b4a24b5778
   [cppcheck]=df32b0fb05f0c951ab0efa691292c7428f3f50a9