Remove <3.12 Requirement for Python

[rbebb]

Describe the bug
Since pandas-stubs has an upper Python version bound, all downstream projects that use poetry to manage dependencies have to set their upper Python version bound to <3.12. While this doesn't necessarily cause any issues, it would be great for downstream projects to be able to leave the version range open (i.e. >=3.8)

To Reproduce

1. Add pandas-stubs as a dependency to a poetry project
2. Run poetry lock
3. Check if the output says to set the upper Python version bound to <3.12

[gandhis1]

Duplicate of #625.

[Dr-Irv]

Closing as it is dup of #625