Gssapi

* Fix broken symlink in GitHub release asset (https://github.com/pythongssapi/python-gssapi/pull/271)
* Add wheels for macOS - both x86_64 and arm64 (https://github.com/pythongssapi/python-gssapi/pull/267)
* Fix distutil deprecation on Python 3.10 by using setuptools instead (https://github.com/pythongssapi/python-gssapi/pull/265)

* Support for running tests against Heimdal in CI (https://github.com/pythongssapi/python-gssapi/pull/262)
* Add Kerberos specific GSS-API Extensions (https://github.com/pythongssapi/python-gssapi/pull/261)
* Tidy up docs and turn warnings into errors (https://github.com/pythongssapi/python-gssapi/pull/260)
* Support DCE IOV functions on macOS (https://github.com/pythongssapi/python-gssapi/pull/258)

- Support for 32-bit Windows python (248, 249)
- Enable specification of krb5-config via environment variable (253, 250)
- Support for GSS_C_CHANNEL_BOUND_FLAG (251)
- Support for docs build with sphinx 4 (246)
- Fix undefined variable in get_all_statuses() (241, 245)
- Add support for str objects in the cred store dict (242, 243)

Note that due to issues with our release tooling for 32-bit Windows, there effectively was no v1.6.13 release.