Requests-ntlm

What's Changed
* Migrate to GHA for CI by jborean93 in https://github.com/requests/requests-ntlm/pull/129
* Migrate to PySPNEGO by clubby789 in https://github.com/requests/requests-ntlm/pull/126
* Add pyproject.toml for PEP518 compliance by jborean93 in https://github.com/requests/requests-ntlm/pull/131

New Contributors
* clubby789 made their first contribution in https://github.com/requests/requests-ntlm/pull/126

**Full Changelog**: https://github.com/requests/requests-ntlm/compare/v1.1.0...v1.2.0

Correct behaviour when parsing a UPN passed in as the username - https://github.com/requests/requests-ntlm/pull/89
Enhanced the CBT hashes when using a certificate that has a hash algorithm that is greater than sha256 - https://github.com/requests/requests-ntlm/pull/94

- 52 - Python 3 support - trustrachel