Sensitive data should be hidden from logs

[endersonmaia]

Opening issue #75 made me think about the passwords leaking on the logs. That should be avoided.

Somehing like:

2022/02/24 19:00:15 failed to connect to PostgreSQL server: parse postgresql://postgres:[email protected]/postgres?ssl=required                                                                                    
: net/url: invalid control character in URL                                                                                                                                                                                                                                                      ```