Dist utils is being removed in Python 3.12

[rafelafrance]

We use this to check that the proper modules are installed. Which means that we can't use an external module to check that external modules are installed. Rather circular, that.

I need to write my own module version checker utility. Given that we only have 3 modules in requirements.txt this doesn't need to be complex.

It only affects util_check_requirements.py