Docstrfmt

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**Fixed**

- Fix ``ImportError`` when importing from black. Pinned black to 22.8.*.

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**Added**

- Added a flag to skip the cache.

**Fixed**

- Fix ``AttributeError`` when accessing ``rawsource`` during the handling ``Text``
nodes.

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**Changed**

- Bump maximum version of ``click`` from ``8.0.0`` to ``9.0.0``.
- Bump minimum version of ``black`` to ``22``.

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**Fixed**

- An issue where docstrfmt would not properly find the ``pyproject.toml`` file.

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**Changed**

- Switch from unmaintained ``appdirs`` to the replacement ``platformdirs``.

**Fixed**

- An issue where the summary line of docstring was incorrectly wrapped.

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**Added**

- Add ``appdirs`` dependency.