Disable progress bar

[JeanChristopheMorinPerso]

Hello, while running the conda project lock command in a GitHub Actions workflow, I noticed that the progress bar was still doing its thing as it I was running it with a proper terminal emulator.

This results in hundreds of log line line these:

Locking dependencies for environment default on platforms linux-64, linux-aarch64, osx-arm64: ◜ 
Locking dependencies for environment default on platforms linux-64, linux-aarch64, osx-arm64: ◠ 
Locking dependencies for environment default on platforms linux-64, linux-aarch64, osx-arm64: ◝ 
Locking dependencies for environment default on platforms linux-64, linux-aarch64, osx-arm64: ◞ 
Locking dependencies for environment default on platforms linux-64, linux-aarch64, osx-arm64: ◡ 

Is there a way to disable this progress bar? I couldn't find any way to disable that in the code, but maybe I'm missing something?

Thanks!

[AlbertDeFusco]

I'll add a check for os.isatty() there

[AlbertDeFusco]

and also a --quiet flag