Dependabot can't resolve your Python dependency files

[dependabot-preview]

Dependabot can't resolve your Python dependency files.

As a result, Dependabot couldn't update your dependencies.

The error Dependabot encountered was:

ERROR: ERROR: Could not find a version that matches black
Skipped pre-versions: 18.3a0, 18.3a0, 18.3a1, 18.3a1, 18.3a2, 18.3a2, 18.3a3, 18.3a3, 18.3a4, 18.3a4, 18.4a0, 18.4a0, 18.4a1, 18.4a1, 18.4a2, 18.4a2, 18.4a3, 18.4a3, 18.4a4, 18.4a4, 18.5b0, 18.5b0, 18.5b1, 18.5b1, 18.6b0, 18.6b0, 18.6b1, 18.6b1, 18.6b2, 18.6b2, 18.6b3, 18.6b3, 18.6b4, 18.6b4, 18.9b0, 18.9b0, 19.3b0, 19.3b0, 19.10b0, 19.10b0, 20.8b0, 20.8b1, 21.4b0, 21.4b0, 21.4b1, 21.4b1, 21.4b2, 21.4b2, 21.5b0, 21.5b0, 21.5b1, 21.5b1, 21.5b2, 21.5b2, 21.6b0, 21.6b0, 21.7b0, 21.7b0
There are incompatible versions in the resolved dependencies.
[pipenv.exceptions.ResolutionFailure]:       return resolve_deps(
[pipenv.exceptions.ResolutionFailure]:   File "/usr/local/.pyenv/versions/3.8.9/lib/python3.8/site-packages/pipenv/utils.py", line 718, in resolve_deps
[pipenv.exceptions.ResolutionFailure]:       resolved_tree, hashes, markers_lookup, resolver = actually_resolve_deps(
[pipenv.exceptions.ResolutionFailure]:   File "/usr/local/.pyenv/versions/3.8.9/lib/python3.8/site-packages/pipenv/utils.py", line 480, in actually_resolve_deps
[pipenv.exceptions.ResolutionFailure]:       resolved_tree = resolver.resolve()
[pipenv.exceptions.ResolutionFailure]:   File "/usr/local/.pyenv/versions/3.8.9/lib/python3.8/site-packages/pipenv/utils.py", line 395, in resolve
[pipenv.exceptions.ResolutionFailure]:       raise ResolutionFailure(message=str(e))
[pipenv.exceptions.ResolutionFailure]:       pipenv.exceptions.ResolutionFailure: ERROR: ERROR: Could not find a version that matches black
[pipenv.exceptions.ResolutionFailure]:       Skipped pre-versions: 18.3a0, 18.3a0, 18.3a1, 18.3a1, 18.3a2, 18.3a2, 18.3a3, 18.3a3, 18.3a4, 18.3a4, 18.4a0, 18.4a0, 18.4a1, 18.4a1, 18.4a2, 18.4a2, 18.4a3, 18.4a3, 18.4a4, 18.4a4, 18.5b0, 18.5b0, 18.5b1, 18.5b1, 18.6b0, 18.6b0, 18.6b1, 18.6b1, 18.6b2, 18.6b2, 18.6b3, 18.6b3, 18.6b4, 18.6b4, 18.9b0, 18.9b0, 19.3b0, 19.3b0, 19.10b0, 19.10b0, 20.8b0, 20.8b1, 21.4b0, 21.4b0, 21.4b1, 21.4b1, 21.4b2, 21.4b2, 21.5b0, 21.5b0, 21.5b1, 21.5b1, 21.5b2, 21.5b2, 21.6b0, 21.6b0, 21.7b0, 21.7b0
[pipenv.exceptions.ResolutionFailure]: Warning: Your dependencies could not be resolved. You likely have a mismatch in your sub-dependencies.
  First try clearing your dependency cache with $ pipenv lock --clear, then try the original command again.
 Alternatively, you can use $ pipenv install --skip-lock to bypass this mechanism, then run $ pipenv graph to inspect the situation.
  Hint: try $ pipenv lock --pre if it is a pre-release dependency.
ERROR: ERROR: Could not find a version that matches black
Skipped pre-versions: 18.3a0, 18.3a0, 18.3a1, 18.3a1, 18.3a2, 18.3a2, 18.3a3, 18.3a3, 18.3a4, 18.3a4, 18.4a0, 18.4a0, 18.4a1, 18.4a1, 18.4a2, 18.4a2, 18.4a3, 18.4a3, 18.4a4, 18.4a4, 18.5b0, 18.5b0, 18.5b1, 18.5b1, 18.6b0, 18.6b0, 18.6b1, 18.6b1, 18.6b2, 18.6b2, 18.6b3, 18.6b3, 18.6b4, 18.6b4, 18.9b0, 18.9b0, 19.3b0, 19.3b0, 19.10b0, 19.10b0, 20.8b0, 20.8b1, 21.4b0, 21.4b0, 21.4b1, 21.4b1, 21.4b2, 21.4b2, 21.5b0, 21.5b0, 21.5b1, 21.5b1, 21.5b2, 21.5b2, 21.6b0, 21.6b0, 21.7b0, 21.7b0
There are incompatible versions in the resolved dependencies.

['Traceback (most recent call last):\n', '  File "/usr/local/.pyenv/versions/3.8.9/lib/python3.8/site-packages/pipenv/utils.py", line 501, in create_spinner\n    yield sp\n', '  File "/usr/local/.pyenv/versions/3.8.9/lib/python3.8/site-packages/pipenv/utils.py", line 649, in venv_resolve_deps\n    c = resolve(cmd, sp)\n', '  File "/usr/local/.pyenv/versions/3.8.9/lib/python3.8/site-packages/pipenv/utils.py", line 539, in resolve\n    sys.exit(c.return_code)\n', 'SystemExit: 1\n']

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