v4.5.6

Release of version 4.5.6:

1c972ff remove staging id
7f45288 build: tidy up release history
afe7470 build: close and release repo
64282d4 publish: using sonatype
abe9b7c build: consistent working spotless
4f891c8 build: re-add snapshot repo
ce61934 build: spotlessApply
60ba759 build: pull release dependencies from sonatype