Bump bcrypt from 3.1.7 to 3.2.0

Bumps [bcrypt](https://github.com/pyca/bcrypt) from 3.1.7 to 3.2.0.
- [Release notes](https://github.com/pyca/bcrypt/releases)
- [Changelog](https://github.com/pyca/bcrypt/blob/master/release.py)
- [Commits](pyca/bcrypt@3.1.7...3.2.0)

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

requirements.txt

@@ -1,4 +1,4 @@
-bcrypt==3.1.7
+bcrypt==3.2.0
 certifi==2020.6.20
 cffi==1.14.2
 chardet==3.0.4