Update Julia to 1.8.0 (#1774)

Author: tomyun

datascience-notebook/Dockerfile

@@ -16,7 +16,7 @@ USER root
 # Default values can be overridden at build time
 # (ARGS are in lower case to distinguish them from ENV)
 # Check https://julialang.org/downloads/
-ARG julia_version="1.7.3"
+ARG julia_version="1.8.0"
 
 # R pre-requisites
 RUN apt-get update --yes && \