Latest bumpver issues on Python 3.12

I had huge issues with bumpver when trying to bump a version from `v2.2.0a2` to `v2.2.0`,

```
bumpver update -t final
```

it would complain that the alpha version is higher than the new version.
In the end I needed to downgrade to version `2022.1120`.

I suspect the problem is that I am running Python 3.12, where they have been some breaking changes to `pkg_resources`. I tracked down that the offending issue/ commit in bumpver is:

https://github.com/mbarkhau/bumpver/issues/200
https://github.com/mbarkhau/bumpver/commit/8dc594c05580275f8b071fe4b1128be77f9be391

This is really an issue to be opened on bumpver, but I need some extra time to investigate.