Update dependencies in poetry.lock

I ran `poetry update`, which fixed several vulnerabilities. HOWEVER,
there were a couple that didn't get fixed, including the wheel package.
I ran `poetry run pip install -U wheel` to update wheel in my own virtual
environmenet instead of adding it to pyproject.toml. This is because I
read something that indicated that wheel is a rather special package that
either should be, or actually cannot be, handled via pyrpoject.toml. I
*believe* that the Gitlab pipeline will create an entirely new virtual
environemnt, and that this will not be an issue, but we'll see.