agent-mvn: Depend on the latest chrome version

The docker image build was failing as this image doesn't exist anymore.

Change-Id: I4869c2f7ca480539946d6815ce8070d9ed953337
diff --git a/jenkins-docker/agent-mvn/Dockerfile b/jenkins-docker/agent-mvn/Dockerfile
index 5241e3d..3589662 100644
--- a/jenkins-docker/agent-mvn/Dockerfile
+++ b/jenkins-docker/agent-mvn/Dockerfile
@@ -1,4 +1,4 @@
-FROM gerritforge/gerrit-ci-agent-bazel:debian-buster-80.0.3987.149
+FROM gerritforge/gerrit-ci-agent-bazel:debian-buster-latest
 
 USER jenkins