ci(pytest): add colored output

[ReenigneArcher]

Description

Use colored output for pytest, this should make it easier to track down failures when reviewing the logs. The colored output works in GitHub as well.

Type of change

Please delete options that are not relevant.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the docstring for new or existing methods
• I have added tests when applicable