Bump cffi from 1.14.2 to 1.14.3

Bumps [cffi](https://github.com/python-cffi/release-doc) from 1.14.2 to 1.14.3.
- [Release notes](https://github.com/python-cffi/release-doc/releases)
- [Commits](https://github.com/python-cffi/release-doc/commits)

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

requirements.txt

@@ -2,7 +2,7 @@ algoliasearch==2.4.0
 attrs==20.2.0
 bcrypt==3.2.0
 certifi==2020.6.20
-cffi==1.14.2
+cffi==1.14.3
 chardet==3.0.4
 colander==1.8.2
 colorama==0.4.3