Drop deps that depend upon the unsupported atty lib

[oubiwann]

This ticket has not been addressed upstream:

• https://github.com/softprops/atty/issues/50

As such, the following tickets have been created:

• https://github.com/mackwic/colored/pull/122
• https://github.com/daboross/fern/issues/113
• https://github.com/daboross/fern/issues/67

Those are all still currently open; if they remain so, we may have to do some work ... at the very least, we can start using owo-colors:

• https://github.com/jam1garner/owo-colors

[oubiwann]

Looks like we can close this now (atty is no longer pulled in with any deps).