Bump packaging from 20.4 to 21.0

[dependabot]

Bumps packaging from 20.4 to 21.0.

Release notes

Sourced from packaging's releases.

Release 20.9

• Run isort over the code base (:issue:377)
• Add support for the macosx_10_*_universal2 platform tags (:issue:379)
• Introduce packaging.utils.parse_wheel_filename() and parse_sdist_filename() (:issue:387 and :issue:389)

Release 20.8

• Revert back to setuptools for compatibility purposes for some Linux distros (:issue:363)
• Do not insert an underscore in wheel tags when the interpreter version number is more than 2 digits (:issue:372)

20.7

No release notes provided.

20.6

No release notes provided.

20.5

No release notes provided.

Changelog

Sourced from packaging's changelog.

21.0 - 2021-07-03

* `packaging` is now only compatible with Python 3.6 and above.
* Add support for zip files in ``parse_sdist_filename`` (:issue:`429`)
20.9 - 2021-01-29

• Run isort <https://pypi.org/project/isort/>_ over the code base (:issue:377)
• Add support for the macosx_10_*_universal2 platform tags (:issue:379)
• Introduce packaging.utils.parse_wheel_filename() and parse_sdist_filename() (:issue:387 and :issue:389)

20.8 - 2020-12-11

* Revert back to setuptools for compatibility purposes for some Linux distros (:issue:`363`)
* Do not insert an underscore in wheel tags when the interpreter version number
  is more than 2 digits (:issue:`372`)
20.7 - 2020-11-28

No unreleased changes.

20.6 - 2020-11-28

.. note:: This release was subsequently yanked, and these changes were included in 20.7.

Fix flit configuration, to include LICENSE files (:issue:357)
Make intel a recognized CPU architecture for the universal macOS platform tag (:issue:361)
Add some missing type hints to packaging.requirements (issue:350)

20.5 - 2020-11-27

• Officially support Python 3.9 (:issue:343)
• Deprecate the LegacyVersion and LegacySpecifier classes (:issue:321)
• Handle OSError on non-dynamic executables when attempting to resolve the glibc version string.

Commits

• 085ff41 Bump for release
• 38aa73a Fix capitalisation on a classifier
• 093e24f Expect a Python 3-only wheel
• d650cfd Move manylinux logic into private module (#438)
• 6b2efc6 Specify the default value for the specifier argument to SpecifierSet (#437)
• abcc286 Fix some spelling mistakes (#436)
• 7350746 Use a TypeVar to pass the type through packaging.specifiers.filter() (#430)
• 8c78c35 Add support to .utils.parse_sdist_filename() for sdists with .zip extension (...
• c32c969 PEP 656 musllinux support (#411)
• ae2c72e Fix a typo in CHANGELOG (#423)
• Additional commits viewable in compare view

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[dependabot]

Superseded by #61.