textproc/py-python-lsp-server: Update to 1.7.3

• Adds support for Yapf 0.33
• Fix an empty current working directory value for Pylint

Changelog: https://github.com/python-lsp/python-lsp-server/blob/develop/CHANGELOG.md#version-173-20230515

Reported by: portscout, Repology
MFH: 2023Q2

(cherry picked from commit 304524388125bd1c0f9b788d8e3633c8261b070e)