build(deps-dev): bump setuptools from 57.0.0 to 60.9.1

[dependabot[bot]]

Bumps setuptools from 57.0.0 to 60.9.1.

Changelog

Sourced from setuptools's changelog.

v60.9.1

Misc ^^^^

• #3102: Prevent vendored importlib_metadata from loading distributions from older importlib_metadata.
• #3103: Fixed issue where string-based entry points would be omitted.
• #3107: Bump importlib_metadata to 4.11.1 addressing issue with parsing requirements in egg-info as found in PyPy.

v60.9.0

Changes ^^^^^^^

• #2876: In the build backend, allow single config settings to be supplied.
• #2993: Removed workaround in distutils hack for get-pip now that pypa/get-pip#137 is closed.
• #3085: Setuptools no longer relies on pkg_resources for entry point handling.
• #3098: Bump vendored packaging to 21.3.
• Removed bootstrap script.

v60.8.2

Misc ^^^^

• #3091: Make concurrent.futures import lazy in vendored more_itertools package to a avoid importing threading as a side effect (which caused gevent/gevent#1865 <https://github.com/gevent/gevent/issues/1865>__). -- by :user:maciejp-ro

v60.8.1

Misc ^^^^

• #3084: When vendoring jaraco packages, ensure the namespace package is converted to a simple package to support zip importer.

v60.8.0

Changes

... (truncated)

Commits

• 5b2b20d Bump version: 60.9.0 → 60.9.1
• 9c6a6e5 Merge pull request #3099 from abravalheri/flaky-test-build-meta
• 4f78331 Merge pull request #3109 from pypa/bugfix/3107-importlib-metadata-empty-eggin...
• c03287a Merge pull request #3108 from pypa/bugfix/3102-old-metadata-conflict
• e9e2750 Merge pull request #3106 from pypa/bugfix/3103-entry-points-from-string
• f83da68 Merge pull request #3101 from pypa/debt/ci-distutils-diet
• e688cb5 Bump importlib_metadata to 4.11.1. Fixes #3107.
• 4819690 Prevent vendored importlib_metadata from loading distributions from older imp...
• 7844b38 Fix issue where string-based entry points would be omitted. Fixes #3103.
• d7dfa90 Add test for loading entry points from a string. Ref #3103.
• Additional commits viewable in compare view

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Superseded by #33.