Minors

[jannisborn]

• move moler out from vcs requirements (closes Install MoLeR from PyPI  #160)
• fix problem with pydantic upper bound (closes Remove pydantic upper bound #133). I opened an issue with pydantic here and our current fix is more a hotfix.
• fixed a problem introduced in the GeoDiff PR that introduced nglviewer as dependency. When installing jupyter now, nglviewer raises an issue. I looked into that, it can be fixed by upper-bounding ipywidgets which is now done in nobteooks/requirements.txt
• bump TdC to the freshly released 0.3.8 to avoid the bug in the MoleculeOne retro wrapper

[jannisborn]

Pinning pytdc for now, new issue coming up when bumping to 0.3.8

[jannisborn]

Upper-bounding diffusers for the moment. 0.7.0 was released yesterday but even the builds on their main branch are failing so let's wait for their stable release.