Update dependency setuptools to v49.6.0

[renovate]

This PR contains the following updates:

Package	Update	Change
setuptools	minor	==49.2.0 -> ==49.6.0

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Release Notes

pypa/setuptools

v49.6.0

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• #​2129: In pkg_resources, no longer detect any pathname ending in .egg as a Python egg. Now the path must be an unpacked egg or a zip file.

v49.5.0

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• #​2306: When running as a PEP 517 backend, setuptools does not try to install
  setup_requires itself. They are reported as build requirements for the
  frontend to install.

v49.4.0

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• #​2310: Updated vendored packaging version to 20.4.

v49.3.2

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• #​2300: Improve the safe_version function documentation
• #​2297: Once again, in stubs prefer exec_module to the deprecated load_module.

v49.3.1

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• #​2316: Removed warning when distutils is imported before setuptools when distutils replacement is not enabled.

v49.3.0

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• #​2259: Setuptools now provides a .pth file (except for editable installs of setuptools) to the target environment to ensure that when enabled, the setuptools-provided distutils is preferred before setuptools has been imported (and even if setuptools is never imported). Honors the SETUPTOOLS_USE_DISTUTILS environment variable.

v49.2.1

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• #​2257: Fixed two flaws in distutils._msvccompiler.MSVCCompiler.spawn.

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