PgJDBC version 42.2.12 released

This release has reverted a few changes in 42.2.11

1) The change https://github.com/pgjdbc/pgjdbc/pull/1729  caused an exception to be thrown if a commit would silently rollback. In retrospect this was determined to be a breaking change and should have (and will be) been released in 42.3.0

2) There was a regression introduced by https://github.com/pgjdbc/pgjdbc/pull/1719 which created duplicate keys in PgType cache. This was reverted and will not be re-applied without significant changes.

Thanks,