kiji-hive-adapter: [maven-release-plugin] prepare for next development iteration

commit: https://github.com/kijiproject/kiji-hive-adapter/commit/2b60dbceed717103b3cb729cc08027089fb9d4f6
kiji-hive-adapter: [maven-release-plugin] prepare release kiji-hive-root-0.12.0

commit: https://github.com/kijiproject/kiji-hive-adapter/commit/6677dd5e70e4b9f6d1fdcf7f5c423fbbed8d6b4c