gitlab/azure: Update to latest container tag

- Based on bionic-20200112 tag from Ubuntu
- Add graphviz (Heinrich)

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d799cc3..c7ca596 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,7 @@
 
 # Grab our configured image.  The source for this is found at:
 # https://gitlab.denx.de/u-boot/gitlab-ci-runner
-image: trini/u-boot-gitlab-ci-runner:bionic-20191202-10Jan2020
+image: trini/u-boot-gitlab-ci-runner:bionic-20200112-17Jan2020
 
 # We run some tests in different order, to catch some failures quicker.
 stages: