Bump setuptools from 70.1.0 to 70.3.0 in /.github

[dependabot[bot]]

Bumps setuptools from 70.1.0 to 70.3.0.

Changelog

Sourced from setuptools's changelog.

v70.3.0

Features

• Support for loading distutils from the standard library is now deprecated, including use of SETUPTOOLS_USE_DISTUTILS=stdlib and importing distutils before importing setuptools. (#4137)

Bugfixes

• pypa/distutils#268

v70.2.0

Features

• Updated distutils including significant changes to support Cygwin and mingw compilers. (#4444)

Bugfixes

• Fix distribution name normalisation (:pep:625) for valid versions that are not canonical (e.g. 1.0-2). (#4434)

v70.1.1

Misc

• #4429

Commits

• 356e9a0 Bump version: 70.2.0 → 70.3.0
• 822280b Merge pull request #4463 from pypa/bugfix/distutils-34f9518ef
• c4e64c1 Add news fragment.
• b01183c Merge https://github.com/pypa/distutils into bugfix/distutils-34f9518ef
• e221581 Merge pull request pypa/distutils#267 from msys2-contrib/customize_compiler_m...
• 34f9518 Merge pull request #4410 from pypa/debt/4137-deprecate-distutils-stdlib
• bacd9c6 sysconfig: skip customize_compiler() with MSVC Python again
• 4a3406b CI: also set CC/CXX when pip installing with mingw+clang
• e9f0be9 Merge pull request #4453 from pypa/drop-gitignore
• 70cda3d Use '.yml' for consistency.
• Additional commits viewable in compare view

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[dependabot[bot]]

Superseded by #238.