Update dependency cffi to v1.16.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
cffi (source, changelog)	==1.12.3 -> ==1.16.0

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Release Notes

python-cffi/cffi (cffi)

v1.16.0

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• Add support for Python 3.12. With the removal of distutils from Python 3.12, projects
  using CFFI features that depend on distutils at runtime must add a dependency on
  setuptools to function under Python 3.12+. CFFI does not declare a runtime setuptools
  requirement to avoid an unnecessary dependency for projects that do not require it.
• Drop support for end-of-life Python versions (2.7, 3.6, 3.7).
• Add support for PEP517 builds; setuptools is now a required build dependency.
• Declare python_requires metadata for Python 3.8+. This allows unsupported Pythons
  to continue using previously released sdists and wheels.
• Move project source under src/; a more standard layout that also enables CI to more easily
  catch packaging errors.

v1.15.1

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(retroactive GitHub release for current stable version 1.15.1)

• If you call ffi.embedding_api() but don't write any extern "Python" function there, then the resulting C code would fail an assert. Fixed.
• Updated Windows/arm64 embedded libffi static lib to v3.4.2, and scripted to ease future updates (thanks Niyas Sait!)

Full Changelog: python-cffi/cffi@v1.15.0...v1.15.1

v1.15.0

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v1.14.6

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v1.14.5

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v1.14.4

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v1.14.3

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v1.14.2

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v1.14.1

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v1.14.0

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v1.13.2

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v1.13.1

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v1.13.0

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