Update julia

Changes:

- https://github.com/docker-library/julia/commit/decfcd3: Update to 1.3.1

library/julia

@@ -6,13 +6,13 @@ GitRepo: https://github.com/docker-library/julia.git
 
 Tags: 1.3.1-buster, 1.3-buster, 1-buster, buster
 SharedTags: 1.3.1, 1.3, 1, latest
-Architectures: amd64, arm64v8, i386
-GitCommit: 92acb5e96f5e19a2dd4955eb478ed74d31ed5059
+Architectures: amd64, arm32v7, arm64v8, i386
+GitCommit: decfcd314ded05c1afc5202ec423a31e4f959635
 Directory: 1.3/buster
 
 Tags: 1.3.1-stretch, 1.3-stretch, 1-stretch, stretch
-Architectures: amd64, arm64v8, i386
-GitCommit: 92acb5e96f5e19a2dd4955eb478ed74d31ed5059
+Architectures: amd64, arm32v7, arm64v8, i386
+GitCommit: decfcd314ded05c1afc5202ec423a31e4f959635
 Directory: 1.3/stretch
 
 Tags: 1.3.1-windowsservercore-ltsc2016, 1.3-windowsservercore-ltsc2016, 1-windowsservercore-ltsc2016, windowsservercore-ltsc2016