Use std::path::absolute

[NyxCode]

std::path::absolute got stabilized in 1.79.0

Is your feature request related to a problem? Please describe.
Nope!

Describe the solution you'd like
Use the stdlib's std::path::absolute

TODOs

• figure out if we want to do that right away, or wait a bit until 1.79.0 is widely adopted
• make sure our path::absolute does 1:1 the same thing

[gustavo-shigueo]

They've stabilized it?! Awesome! This will help remove the duplicate we have in the cli branch. Though it is another technically a breaking change due to raising the MSRV

[gustavo-shigueo]

• make sure our path::absolute does 1:1 the same thing

I'll create a PR applying the change to see if CI passes