ci: some minor fixes

[henryiii]

Fixes to get CI working again, and some speed improvements.

[henryiii]

Without this, CI is currently running twice on things like dependabot PRs.

[henryiii]

I believe this was fixed in git / pre-commit.

[henryiii]

Hmm, maybe not. Just a sec.

[henryiii]

No, I take that back.

[henryiii]

Makes repeated pushes to the same PR faster. Generates a few "cancelled job" notifications, though.

[henryiii]

Temporary until the coverage issue on 22.04 is resolved.

[henryiii]

A lot faster & supports 3.11.

[henryiii]

The coverage issue:

nox/nox/virtualenv.py

Lines 373 to 394 in cc710bd

	if original is None:
	output = nox.command.run(
	[self._resolved_interpreter, "-c", program], silent=True, log=False
	)
	assert isinstance(output, str)
	original = output
	created = nox.command.run(
	["python", "-c", program], silent=True, log=False, paths=self.bin_paths
	)
	return original == created
	def _read_base_prefix_from_pyvenv_cfg(self) -> str | None:
	"""Return the base-prefix entry from pyvenv.cfg, if present."""
	path = os.path.join(self.location, "pyvenv.cfg")
	if os.path.isfile(path):
	with open(path) as io:
	for line in io:
	key, _, value = line.partition("=")
	if key.strip() == "base-prefix":
	return value.strip()

I think this is never None on Ubuntu 22.04 & Python 3.11. Shouldn't the 100% requirement be on the combined coverage, rather than partial? Anyway, should this be marked as not being required to be covered, etc?

[FollowTheProcess]

Hmmm wonder why it would never be None on ubuntu-latest py3.11? Weird.

Agree on combined coverage being used for the fail-under, is this a config option in coverage? I did have a quick look but couldn't see anything obvious.

If we can't do that then yeah I agree we should exclude it from coverage measurement and revert back to ubuntu-latest

This all looks good to me 👍🏻