Bump jruby dev version

library/jruby

@@ -5,7 +5,7 @@
 1.7.16.1: git://github.com/cpuguy83/docker-jruby@fe814254b51c4f619ec2561df421259c32b27c63 1.7
 latest: git://github.com/cpuguy83/docker-jruby@fe814254b51c4f619ec2561df421259c32b27c63 1.7
 
-dev: git://github.com/cpuguy83/docker-jruby@384671d2c1b26465a38c6f9e645024b3ab217bad 9000
+dev: git://github.com/cpuguy83/docker-jruby@9ceb1fcc3eddd71260ff7486f168edbda3974f87 9000
 
 1.7-onbuild: git://github.com/cpuguy83/docker-jruby@10eae9359611104c013e82206104b40f20fac377 1.7/onbuild
 1.7.16-onbuild: git://github.com/cpuguy83/docker-jruby@10eae9359611104c013e82206104b40f20fac377 1.7/onbuild