Use message.inspect if message does not have encoding

[deanputney]

When enabling debug level logging, a developer may want to log objects or hashes that haven't been converted to a string already. In the case of messages with no encoding, inspect the log message and log the inspected result to avoid a failure and skipping the message.

[quek]

https://github.com/actindi/act-fluent-logger-rails/blob/master/lib/act-fluent-logger-rails/logger.rb#L95 Thanks,