Log Message:
graphics/py-matplotlib: Unbreak via pyparsing dep hack

Matplotlib currently forbids our version of pyparsing (3.1.0).
The issue only affects error messages.
This update hacks out the pyparsing < 3.1.0 requirement so that
matplotlib dependents can at least function, though some error
messages won't pass through properly.

https://github.com/matplotlib/matplotlib/issues/26152