dovecot_config_version 2.4.2 -> error

Hi

I would expect this to track the current version (i.e. 2.4.2) - would be good to accept 2.4.2 and later versions as they are released:

doveconf line 9: Invalid dovecot_config_version: Currently supported versions are: 2.4.0 2.4.1 0.0.0

-- Gene