Myproxyclient

Highlights

Support for Python 3.12

Changelog

- allow support for Python=3.12 via retirement of `SafeConfigParser` via [20](https://github.com/cedadev/MyProxyClient/pull/20) by [Valeriu Predoi](https://github.com/valeriupredoi) and checked by [Alan Iwi](https://github.com/alaniwi)
- added Python package components (basic unit test, Github Action that builds and uploads the package) via [22](https://github.com/cedadev/MyProxyClient/pull/22) by [Valeriu Predoi](https://github.com/valeriupredoi) and [Bouwe Andela](https://github.com/bouweandela)

* Fix dependency on `six` package
* refactored package structure - client becomes a package. Existing code imports should not be affected.

* Update to default to TLS 1.2
* Update to UKRI copyright

Update hashing algorithm to SHA256

* Ported to Python 3. This version is dual compatible with Python 2 and 3.
* Minor fix to script to improve error reporting
* Added Vagrantfile to enable provisioning of test myproxy-server for use with
the tests.

Minor updates and fixes for conda-forge submission