Help port bandersnatch to latest S3Path APIs + python 3.12

[cooperlees]

S3Path (and swift - But going to drop support unless someone else wants to help port it) is our biggest blocker to moving to Python 3.12. There is so much context here I sadly don't have as I've used S3 very little and never with bandersnatch.

Would love help from someone to help port this. I've spent a hour or so today and I don't have the time to spend on this, but would love to try and keep bandersnatch able to run on latest versions of python.

I feel we need to remove our own S3Path subclassing and many internal usages. There also seems it's meant to work differently with a new >= python 3.12 API? This has confused me to on the path we should take.

Any help would be appreciated.