GH-467: fix ArtifactoryPath.__reduce__ for python 3.9 and below

[miskeens]

Fixes an issue with DOHQ CrossPM (which was caused indirectly).

Closes #467

[miskeens]

@allburov @beliaev-maksim hi! Requesting a review since devopshq/crosspm on python before 3.10 suffers from #456

[allburov]

LGTM!

[miskeens]

set PR to draft as the changes still cause failure. copy.deepcopy() called in CrossPM still requires object to copy to have __dict__ property. pushing new solution soon

[miskeens]

not sure how to check reduce() on python 3.9 and lower, but these changes resolve the CrossPM issue.

[beliaev-maksim]

Is there a way to add some test in this repo?

[miskeens]

Is there a way to add some test in this repo?

not that I know of currently :) I did not author the changes for pickling, but I don't see testing ArtifactoryPath deepcopying as a crucial requirement at this point

all I'm interested in is getting CrossPM to work ASAP

[miskeens]

@allburov should we expect a new release soon?

[allburov]

We're doing release 21 Jan 🤞