Undo tomllib no-infer-dep

[jsirois]

Right here:

lift/science/config.py

Lines 4 to 6 in 24f3995

	# This `no-infer-dep` will not be needed once we upgrade ti a version of Pants that fixes:
	# https://github.com/pantsbuild/pants/issues/18055
	import tomllib # pants: no-infer-dep

The switch from tomli to the stdlib occurred in 24f3995. That also upgraded to Pants 2.15.0rc2. When we can upgrade to a version of Pants that fixes this lack of knowledge of the tomllib stdlib, we can undo the no-infer-dep.

[jsirois]

The Pants issue tracking this is here: pantsbuild/pants#18055

[jsirois]

Killed this comment in 0489944 since it's no longer required with the switch from Pants to Nox.