Publish swagger client (fail)

Example: https://gitlab.prozorro.sale/prozorro-sale/procedure/-/jobs/165052

$ make publish-swagger-client
cd python_client && python setup.py sdist bdist_wheel && twine upload dist/*.whl -u admin -p [MASKED]
/bin/sh: 1: cd: can't cd to python_client
make: *** [Makefile:177: publish-swagger-client] Error 2