Fix runtime transitive dependency issue for dataservice

[robertbartel]

Despite now having packages and images build correctly, the data service will not properly start due to it missing python-multipart. This appears to be a transitive dependency needed by fastapi.

nwm-master_data-service.1.1jixzman9fu0@gamer1    |   File "/usr/local/lib/python3.9/site-packages/fastapi/dependencies/utils.py", line 817, in get_body_field
nwm-master_data-service.1.1jixzman9fu0@gamer1    |     check_file_field(final_field)
nwm-master_data-service.1.1jixzman9fu0@gamer1    |   File "/usr/local/lib/python3.9/site-packages/fastapi/dependencies/utils.py", line 100, in check_file_field
nwm-master_data-service.1.1jixzman9fu0@gamer1    |     raise RuntimeError(multipart_not_installed_error) from None
nwm-master_data-service.1.1jixzman9fu0@gamer1    | RuntimeError: Form data requires "python-multipart" to be installed. 
nwm-master_data-service.1.1jixzman9fu0@gamer1    | You can install "python-multipart" with: 
nwm-master_data-service.1.1jixzman9fu0@gamer1    | 
nwm-master_data-service.1.1jixzman9fu0@gamer1    | pip install python-multipart
nwm-master_data-service.1.1jixzman9fu0@gamer1    | 

This change adds python-multipart as one of the project dependencies in the dmod.dataservice pyproject.toml file.

[aaraney]

Thanks @robertbartel!

[robertbartel]

@aaraney, as your knowledge of Python package is superior to mine, do you see a clear reason why this didn't break with the old setup.py approach but seems to have once we moved to pyproject.toml?

[aaraney]

@robertbartel, is the exception raised during startup or when you submit a request?

[robertbartel]

@aaraney, startup: it would just continue to display in the logs repeatedly, with the service constantly restarting due to the exception.

[aaraney]

The only thing I can thing is python-multipart was being pulled in from a transitive dependency or fastapi has changed its startup behavior.