Okdata-cli

* Added support for Python 3.12.
* Fix a bug in the version requirement for urllib3 by requiring `okdata-sdk`
version 3 or higher.

* Dropped support for Python 3.7 which has reached end of life. Python 3.8+ is
now required.
* Improved output on data upload when trace ID is missing.

* Improved output from the `datasets cp` command.

* All `okdata pipelines` commands have been removed. Pipelines can still be
configured for datasets when using the the dataset creation wizard (`okdata
datasets create`).
* Improved error message handling in the `pubreg` and `teams` families of
commands.
* The correct maintainer team is named in error messages.

* The `pubreg list-keys` command now supports listing all client keys
simultaneously across different clients.
* Updated the action URL for the `pubreg delete-client` command. Updating to
this version is required for the command to continue working in the future.
* Dataset title errors are caught earlier in the registration form.
* Exiting a prompt by typing `Ctrl+D` no longer results in a stack trace.
* Pygments is no longer a dependency.
* The `datasets boilerplate` command has been removed as it has been largely
subsumed by the `datasets create` wizard.

* Attempting to upload a non-existent file to a dataset no longer produces a
stack trace, but rather displays a nicer error message instead.
* Datasets without a `latest` version is handled better.