fix: running black on python 3.11

fix: running black on python 3.11

Black 22.0 is incompatible with click >= 8.1 [1], pin it to a working
version.

Traceback (most recent call last):
  File ".pyenv/bin/black", line 8, in <module>
    sys.exit(patched_main())
             ^^^^^^^^^^^^^^
  File ".pyenv/lib/python3.11/site-packages/black/__init__.py", line 6606, in patched_main
    patch_click()
  File ".pyenv/lib/python3.11/site-packages/black/__init__.py", line 6595, in patch_click
    from click import _unicodefun  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: cannot import name '_unicodefun' from 'click' (.pyenv/lib/python3.11/site-packages/click/__init__.py)

[1] https://github.com/psf/black/issues/2964

Change-Id: I502f10e4cdedae4c431a243fc621fa10ab8bc5cf
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/10604
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>