Use faster version of black (#6133)

# Description
Use black compiled with mypyc instead of pure python version to get it
faster

# References
psf/black#3405

## Type of change
- [x] Maintenance (changes required to run napari, tests, & CI smoothly)

.pre-commit-config.yaml

@@ -1,5 +1,5 @@
 repos:
--   repo: https://github.com/psf/black
+-   repo: https://github.com/psf/black-pre-commit-mirror
     rev: 23.7.0
     hooks:
     - id: black