Update chroma dependency

[Samasaur1]

Is your feature request related to a problem? Please describe.
I was trying to use the catppuccin themes defined in Chroma, but the version of Chroma used by cheat is out of date

Describe the solution you'd like
Update the dependency on Chroma from v0.10.0 to v2.8.0

Describe alternatives you've considered
Limit the use of themes to those defined in Chroma 0.10.0

Additional context
Tickets such as #638 suggest that you can add custom colors by getting them included in Chroma, but unless the Chroma dependency is updated, even doing this won't help.

[chrisallenlane]

@Samasaur1, thanks for bringing this to my attention. I didn't realize I wasn't on the current major version.

I just updated to v2 and merged to master. That change will be included in the 4.4.2 release, which will go out today or tomorrow. That said, I'm going to close this as resolved.

Thanks again.