[stubsabot] Bump cffi to 2.0.*

Release: https://pypi.org/pypi/cffi/2.0.0
Repository: https://github.com/python-cffi/cffi/
Typeshed stubs: https://github.com/python/typeshed/tree/main/stubs/cffi
Changelog: https://cffi.readthedocs.io/en/latest/whatsnew.html
Diff: python-cffi/cffi@v1.17.1...v2.0.0

Stubsabot analysis of the diff between the two releases:
 - Total lines of Python code added: 356.
 - Total lines of Python code deleted: 175.

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- Leave this PR open (as a reminder, and to prevent stubsabot from opening another PR)
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Author: stubsabot

stubs/cffi/METADATA.toml

@@ -1,4 +1,4 @@
-version = "1.17.*"
+version = "2.0.*"
 upstream_repository = "https://github.com/python-cffi/cffi/"
 requires = ["types-setuptools"]