Add support for Python 3.10

[sliverc]

Description of the Bug Report

Python 3.10 has been released and we should add support to DJA. See #846 as reference for implementation.

Checklist

• Certain that this is a bug (if unsure or you have a question use discussions instead)
• Code snippet or unit test added to reproduce bug

[auvipy]

I want to handle this one

[sliverc]

Go for it.