Bump cffi from 1.17.0 to 2.0.0

Bumps [cffi](https://github.com/python-cffi/cffi) from 1.17.0 to 2.0.0.
- [Release notes](https://github.com/python-cffi/cffi/releases)
- [Commits](python-cffi/cffi@v1.17.0...v2.0.0)

---
updated-dependencies:
- dependency-name: cffi
  dependency-version: 2.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -8,7 +8,7 @@ backports.zoneinfo;python_version<"3.9"
 boto3>=1.20.0,<1.41.0
 botocore>=1.25.0,<1.41.0
 certifi==2025.8.3
-cffi==1.17.0
+cffi==2.0.0
 channels==4.3.0
 channels-redis==4.3.0
 charset-normalizer==3.4.0