textproc/py-python-lsp-server: Loose version of dependency

Allow older version of dependency yapf to make devel/spyder work:

pkg_resources.ContextualVersionConflict: (yapf 0.32.0 (/usr/local/lib/python3.9/site-packages), Requirement.parse('yapf>=0.33.0; extra == "all"'), {'python-lsp-server'})

MFH: 2023Q2