Update installation docs and possibly Django

I was interested in looking at a couple of the issues here, but the docs for getting things setup seem to be missing a few bits of information, and the current setup is not compatible with the latest version of Python

Notably:

• The Makefile relies on both pip and python being present, however on every system I've used in the past ~10 years (MacOS and Ubuntu, can't speak for Windows) whenever you install Python3 through the normal package managers (even if not alongside Python2), the commands are pip3 and python3 whereas pip and python have tended to always refer to Python2. This can be worked around with some aliases and a venv, but I feel like this requirement should be noted somewhere in the docs to identify what version of Python should be used and/or the other general requirements to run the project
• Similar to the first issue, the current Django version is not compatible with the latest version of Python. Currently PokeAPI uses Django v3.2.25, which is a year and 2 major versions behind the latest. The issue is that this version still relies on the cgi module, which was removed from Python in version 3.13 last year, and it's not clear in the README what version of Python is actually recommended (I had presumed the latest, but that was not the case)

I am aware of the Docker instructions, but the point still stands that the non-Docker instructions seem to be outdated and such

Read the README and Makefile to compare the documented non-Docker setup with the commands and requirements they use. Check the supported Python and Django versions, including the Python 3.13 compatibility issue. Done means the installation documentation clearly states the required versions and setup commands, with Django updated if that is needed for compatibility.