github actions is failing on main

[cmungall]

See #52, which only modifies the README

https://github.com/hsolbrig/funowl/actions/runs/3421692981/jobs/5698175655#step:5:91

Success!
Updated Pipfile.lock (c8f2218262cd18a9584b6bfe4dfe8f417789a79d5ab4e45bd5ec3dc898cf034c)!
Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.8.14/x64/bin/pipenv_to_requirements", line 8, in <module>
    sys.exit(main())
  File "/opt/hostedtoolcache/Python/3.8.14/x64/lib/python3.8/site-packages/pipenv_to_requirements/__init__.py", line 115, in main
    def_req = parse_pip_file(pipfile, 'default')
  File "/opt/hostedtoolcache/Python/3.8.14/x64/lib/python3.8/site-packages/pipenv_to_requirements/__init__.py", line 66, in parse_pip_file
    return [clean_version(n, i) for n, i in pipfile.get(section, {}).items()]
AttributeError: 'function' object has no attribute 'get'
Error: Process completed with exit code 1.