build-unit-test-docker: libvncserver: update to 0.9.14

The 0.9.14 release is now used in upstream poky.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ie53eeccd1ffea6a8142917416d145a4c67a54e9e
diff --git a/scripts/build-unit-test-docker b/scripts/build-unit-test-docker
index a6cf554..86ac38e 100755
--- a/scripts/build-unit-test-docker
+++ b/scripts/build-unit-test-docker
@@ -167,7 +167,7 @@
         build_type="make",
     ),
     "LibVNC/libvncserver": PackageDef(
-        rev="LibVNCServer-0.9.13",
+        rev="LibVNCServer-0.9.14",
         build_type="cmake",
     ),
     "leethomason/tinyxml2": PackageDef(