Merge pull request #4146 from c0b/bump/v1.6.4

Upgrades elixir to v1.6.4

library/elixir

@@ -3,19 +3,19 @@
 Maintainers: Mr C0B <[email protected]> (@c0b)
 GitRepo: https://github.com/c0b/docker-elixir.git
 
-Tags: 1.6.3, 1.6, latest
+Tags: 1.6.4, 1.6, latest
 Architectures: amd64, arm32v7, arm64v8, i386, s390x, ppc64le
-GitCommit: bf09944c0d0a573f3dde01d864e25db80b3236a2
+GitCommit: 815326583b582cd51f057a20e42be2df990c2044
 Directory: 1.6
 
-Tags: 1.6.3-slim, 1.6-slim, slim
+Tags: 1.6.4-slim, 1.6-slim, slim
 Architectures: amd64, arm32v7, arm64v8, i386, s390x, ppc64le
-GitCommit: bf09944c0d0a573f3dde01d864e25db80b3236a2
+GitCommit: 815326583b582cd51f057a20e42be2df990c2044
 Directory: 1.6/slim
 
-Tags: 1.6.3-alpine, 1.6-alpine, alpine
+Tags: 1.6.4-alpine, 1.6-alpine, alpine
 Architectures: amd64, arm64v8, i386, s390x, ppc64le
-GitCommit: bf09944c0d0a573f3dde01d864e25db80b3236a2
+GitCommit: 815326583b582cd51f057a20e42be2df990c2044
 Directory: 1.6/alpine
 
 Tags: 1.5.3, 1.5