Update metadata in setup.py

[pllim]

I noticed some outdated metadata; for example:

https://github.com/Jammy2211/PyAutoGalaxy/blob/449d5a11c70439010a27d7ceffe20d4c6af13c48/setup.py#L38-L41

The older versions of Python here have all reached EOL and not tested in CI. Also see #45

astropy/astropy.github.com#491 (comment)

[Jammy2211]

Done https://github.com/Jammy2211/PyAutoGalaxy/blob/main/setup.py