pip version 24.1 env conflict

Pip version 24.1 and greater returns an error about invalid metadata when trying to install pytorch_lightning==1.7; needed to downgrade pip to 24.0 to get the env set up as outlined.

"DEPRECATION: pytorch-lightning 1.7.0 has a non-standard dependency specifier torch>=1.9.*. pip 24.1 will enforce this behaviour change. A possible replacement is to upgrade to a newer version of pytorch-lightning or contact the author to suggest that they release a version with a conforming dependency specifiers. Discussion can be found at https://github.com/pypa/pip/issues/12063"