Merge pull request #7404 from alcohol/master

composer 1.9.3

library/composer

@@ -3,9 +3,9 @@
 Maintainers: Composer (@composer), Rob Bast (@alcohol)
 GitRepo: https://github.com/composer/docker.git
 
-Tags: 1.9.2, 1.9, 1, latest
+Tags: 1.9.3, 1.9, 1, latest
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le
-GitCommit: 47c6a2cc73d7c2c5593f72ed62456d997236c71f
+GitCommit: 21089638c5aa440bd6c18437f1fbaae067b8e803
 Directory: 1.9
 
 Tags: 1.8.6, 1.8