Fix VSCode black and venv mismatch

[danbraunai-apollo]

VSCode output Black formatter tab shows:

2024-01-26 14:14:42.649 [info] /mnt/ssd-interp/dan/RIB/rib-env/bin/python -m black --version
2024-01-26 14:14:42.649 [info] CWD formatter: /mnt/ssd-interp/dan/RIB/rib
2024-01-26 14:14:42.717 [info] Version info for formatter running for /mnt/ssd-interp/dan/RIB/rib:
black, 23.10.1 (compiled: no)
Python (CPython) 3.10.13

regardless of what /mnt/ssd-interp/dan/RIB/rib-env/bin/python -m black --version actually returns.

The Black extension docs say:

The extension ships with black=23.10.1.

The bundled black is only used if there is no installed version of black found in the selected python environment.

So it should find the version in the virtual env, and it looks like it even tries to in the Output tab, but it doesn't.

[danbraunai-apollo]

For now, we just pinned to black=23.10.1 (#307). Will leave issue open as this isn't a long-term solution