py-ipykernel: updated to 6.23.1

6.23.1

Bugs fixed

- Avoid echoing onto a captured FD

Maintenance and upkeep improvements

- update readthedocs env to 3.11

6.23.0

Enhancements made

- Support control\<>iopub messages to e.g. unblock comm_msg from command execution
- Add outstream hook similar to display publisher

Maintenance and upkeep improvements

- Use local coverage

(adam)