chore: unpin Pre-commit additional_dependencies

[silasary]

What type of pull request is this?

• Non-breaking code change
• Breaking code change
• Documentation change/addition
• Tests change
• CI change
• Other: Pre-commit

Description

Pre-commit doesn't update pinned additional_dependencies, so these are slowly getting more and more out of date.

Given the choice between manually updating these by hand, or unpinning, I'd rather go with the latter.

Changes

• Removed some outdated pins in .pre-commit-config.yml

Test Scenario(s)

I ran pre-commit run --all-files after unpinning, and flake8 still passed.

Checklist

• I've formatted my code with Black
• I've added docstrings to everything I've touched
• I've ensured my code works on Python 3.10.x
• I've ensured my code works on Python 3.11.x
• I've tested my changes
• I've added tests for my code - if applicable
• I've updated the documentation - if applicable