Install FEniCSx adapter in venv for running tutorials

[BenjaminRodenberg]

Main changes of this PR

Uses venv to install FEniCSx adapter

Motivation and additional information

Follows the recommended approach for installing packages in python.

[NiklasVin]

You could try to set mpi4py<4 in setup.py? Maybe it's the same issue as here: https://fenicsproject.discourse.group/t/no-attribute-qualname-due-to-mpi4py-4-0-0/15375?

[BenjaminRodenberg]

You could try to set mpi4py<4 in setup.py? Maybe it's the same issue as here: https://fenicsproject.discourse.group/t/no-attribute-qualname-due-to-mpi4py-4-0-0/15375?

Thanks for the hint! I will try this out. I'm a bit surprised that this did not explode in earlier runs (e.g. 5d8b553). But for some reason we installed mpi4py 3.x in 5d8b553 and now we install mpi4py 4.x.