kiji-music: Update to release version of platform

commit: https://github.com/kijiproject/kiji-music/commit/1934cefa3b83deb742d9b38d65702887cdda60fd
kiji-music: [maven-release-plugin] prepare for next development iteration

commit: https://github.com/kijiproject/kiji-music/commit/33f9f1d2790dba30afd00d4ead72cafbe539c3ee
kiji-music: [maven-release-plugin] prepare release kiji-music-1.1.5

commit: https://github.com/kijiproject/kiji-music/commit/0742eda7572ae2ccaaa1475825ae86a2a64fe92a