The version of `ipykernel` installed in the user venv should match the version used by Mu

[carlosperate]

Right now it's manually set up, and overtime it could install a version with some kind of incompability:

mu/mu/wheels/__init__.py

Lines 39 to 57 in 563cb86

	mode_packages = [
	# pygame is a pgzero dependency, but there is currently an issue where
	# pygame versions >=2.1.3 have issues in macOS 10.x, so temporarily for
	# Mu release 1.2.1 pin the max version here
	# https://github.com/mu-editor/mu/issues/2423
	("pgzero", ("pgzero>=1.2.1", "pygame<2.1.3")),
	# Lock Werkzeug to < 3.0.0: import flask fails, otherwise.
	("flask", ("flask==2.0.3", "Werkzeug<3.0.0")),
	# The version of ipykernel here should match to the version used by
	# qtconsole at the version specified in setup.py
	# FIXME: ipykernel max ver added for macOS 10.13 compatibility, min taken
	# from qtconsole 4.7.7. This is mirrored in setup.py
	("ipykernel", ("ipykernel>=4.1,<6",)),
	# FIXME: ipykernel<6 depends on ipython_genutils, but it isn't explicitly
	# declared as a dependency. It also depends on traitlets, which
	# incidentally brought ipython_genutils, but in v5.1 it was dropped, so as
	# a workaround we need to manually specify it here
	("ipython_genutils", ("ipython_genutils>=0.2.0",)),
	]

Mu could instead figure out the exact version it has installed, and install the same.