feat(anirent/parser): log parser errors at a lower level than error

[Zaba505]

As a user, I don't want to see extraneous log messages, so that I can focus on the actual desired output like download progress.

Currently, parsing errors are logged at a log level of ERROR which isn't really accurate since it's expected that the parser will fail due the torrents having inconsistent formats. A level of WARN would be much more accurate.