build(deps): update attrs requirement from ~=21.4 to ~=22.1

[dependabot[bot]]

Updates the requirements on attrs to permit the latest version.

Release notes

Sourced from attrs's releases.

22.1.0

Highlights

The main features of this release are:

• The departure of Python 2.7 (enjoy your retirement!),
• and the arrival of Python 3.11.

We had loftier goals feature-wise, but didn't want to block others embracing Python 3.11.

❤️ Huge thanks to my GitHub sponsors, Tidelift subscribers, and Ko-fi buyers! ❤️

None of my projects would exist in their current form without you!

Full Changelog

Backwards-incompatible Changes

• Python 2.7 is not supported anymore.

  Dealing with Python 2.7 tooling has become too difficult for a volunteer-run project.

  We have supported Python 2 more than 2 years after it was officially discontinued and feel that we have paid our dues. All version up to 21.4.0 from December 2021 remain fully functional, of course. #936

• The deprecated cmp attribute of attrs.Attribute has been removed. This does not affect the cmp argument to attr.s that can be used as a shortcut to set eq and order at the same time. #939

Changes

• Instantiation of frozen slotted classes is now faster. #898
• If an eq key is defined, it is also used before hashing the attribute. #909
• Added attrs.validators.min_len(). #916
• attrs.validators.deep_iterable()'s member_validator argument now also accepts a list of validators and wraps them in an attrs.validators.and_(). #925
• Added missing type stub re-imports for attrs.converters and attrs.filters. #931
• Added missing stub for attr(s).cmp_using(). #949
• attrs.validators._in()'s ValueError is not missing the attribute, expected options, and the value it got anymore. #951
• Python 3.11 is now officially supported. #969

Changelog

Sourced from attrs's changelog.

22.1.0 (2022-07-28)

Backwards-incompatible Changes ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Python 2.7 is not supported anymore.

  Dealing with Python 2.7 tooling has become too difficult for a volunteer-run project.

  We have supported Python 2 more than 2 years after it was officially discontinued and feel that we have paid our dues. All version up to 21.4.0 from December 2021 remain fully functional, of course. [#936](https://github.com/python-attrs/attrs/issues/936) <https://github.com/python-attrs/attrs/issues/936>_

• The deprecated cmp attribute of attrs.Attribute has been removed. This does not affect the cmp argument to attr.s that can be used as a shortcut to set eq and order at the same time. [#939](https://github.com/python-attrs/attrs/issues/939) <https://github.com/python-attrs/attrs/issues/939>_

Changes ^^^^^^^

• Instantiation of frozen slotted classes is now faster. [#898](https://github.com/python-attrs/attrs/issues/898) <https://github.com/python-attrs/attrs/issues/898>_
• If an eq key is defined, it is also used before hashing the attribute. [#909](https://github.com/python-attrs/attrs/issues/909) <https://github.com/python-attrs/attrs/issues/909>_
• Added attrs.validators.min_len(). [#916](https://github.com/python-attrs/attrs/issues/916) <https://github.com/python-attrs/attrs/issues/916>_
• attrs.validators.deep_iterable()'s member_validator argument now also accepts a list of validators and wraps them in an attrs.validators.and_(). [#925](https://github.com/python-attrs/attrs/issues/925) <https://github.com/python-attrs/attrs/issues/925>_
• Added missing type stub re-imports for attrs.converters and attrs.filters. [#931](https://github.com/python-attrs/attrs/issues/931) <https://github.com/python-attrs/attrs/issues/931>_
• Added missing stub for attr(s).cmp_using(). [#949](https://github.com/python-attrs/attrs/issues/949) <https://github.com/python-attrs/attrs/issues/949>_
• attrs.validators._in()'s ValueError is not missing the attribute, expected options, and the value it got anymore. [#951](https://github.com/python-attrs/attrs/issues/951) <https://github.com/python-attrs/attrs/issues/951>_
• Python 3.11 is now officially supported. [#969](https://github.com/python-attrs/attrs/issues/969) <https://github.com/python-attrs/attrs/issues/969>_

---

21.4.0 (2021-12-29)

Changes ^^^^^^^

• Fixed the test suite on PyPy3.8 where cloudpickle does not work. [#892](https://github.com/python-attrs/attrs/issues/892) <https://github.com/python-attrs/attrs/issues/892>_

... (truncated)

Commits

• b3dfebe Prepare 22.1.0
• c89abcd It totally is correct
• 9f118b7 Tune first steps
• a3d7f20 Polish contributing guide
• 899497f Clarify (c) ownership
• 696fd78 Hyphenate compound adjectives
• 65c0683 Use NG APIs in glossary
• 5d84d9a Move mypy config to pyproject.toml
• 1590917 Update readme.rst (#986)
• a67c84f Add more prominent callout about slots to API docs
• Additional commits viewable in compare view

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[codecov[bot]]

Codecov Report

Merging #502 (92db1b3) into master (d44a338) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #502   +/-   ##
=======================================
  Coverage   50.95%   50.95%           
=======================================
  Files         123      123           
  Lines        7784     7784           
  Branches     1212     1212           
=======================================
  Hits         3966     3966           
  Misses       3665     3665           
  Partials      153      153           

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