Minor: Fix dependencies

[maresb]

Description

We no longer depend on typing-extensions, so let's remove it.

Also, to be somewhat pedantic, llvmlite should be an explicit dependency under the numba category.

This doesn't solve any current problem, but you know me, I like to be precise about the dependencies. 😂

Related Issue

• Closes #
• Related to Add deptry to check for issues with the project's dependencies. #679

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• Added necessary documentation (docstrings and/or example notebooks)
• If you are a pro: each commit corresponds to a relevant logical change

Type of change

• New feature / enhancement
• Bug fix
• Documentation
• Maintenance
• Other (please specify):