Module missing: 'dependency_injector'

[franagustin]

After upgrading celery-bundle to version 2.0.0, the following issue appears:

  File "/usr/local/lib/python3.6/site-packages/celery_bundle/__init__.py", line 2, in <module>
    from .bundle import CeleryBundle, CeleryContainer, CeleryConfig
  File "/usr/local/lib/python3.6/site-packages/celery_bundle/bundle.py", line 3, in <module>
    from dependency_injector import containers, providers
ModuleNotFoundError: No module named 'dependency_injector'

I guess the dependency-injector package should be included in this project's pyproject.toml.