Aws-sso-util

* Update to PyYAML 6.0.1 for Cython issue ([104](https://github.com/benkehoe/aws-sso-util/issues/104) (see https://github.com/yaml/pyyaml/issues/601)).
* Update login text to match AWS CLI, provide inputs for custom login text to use `verificationUriComplete` ([92](https://github.com/benkehoe/aws-sso-util/issues/)).
* Error handling for missing expiration in cached token.

* CloudFormation functionality now excludes suspended accounts from OU traversal ([80](https://github.com/benkehoe/aws-sso-util/issues/80) via [#81](https://github.com/benkehoe/aws-sso-util/pull/81)).
* Upgrade to `click` 8 ([85](https://github.com/benkehoe/aws-sso-util/issues/85)).

* `aws-sso-util login` adds `receivedAt` time to token cache entry.
* Improved `aws-sso-util check` feedback.
* Displays `receivedAt` time for token if present.
* Validates apparently-valid cached token by attempting to list one page of available accounts.
* Add `--check-profile` option to `aws-sso-util check` for pulling configuration from a profile.

* Remove support for Python 3.6 (removed in `boto3`).
* Fix `aws-sso-credential-process` for `botocore` change.

* Log normal output to stdout ([54](https://github.com/benkehoe/aws-sso-util/issues/54)).
* Fix short region names for GovCloud in `aws-sso-util configure populate` and `aws-sso-util configure profile` ([55](https://github.com/benkehoe/aws-sso-util/issues/55)).
* Update `aws-sso-util login` to use `--force-refresh` for consistency with other commands (`--force` still works).
* `aws-sso-util check` now provides more information about the token cache.

* Added `--account-name-case` and `--role-name-case` to `aws-sso-util configure populate` ([48](https://github.com/benkehoe/aws-sso-util/pull/48)).
* `aws-sso-util check` logs version and timestamp information.
* Fixed bug in `aws-sso-util configure profile` with Python 3.6