Bump cryptography from 3.1.1 to 3.2

Bumps [cryptography](https://github.com/pyca/cryptography) from 3.1.1 to 3.2.
- [Release notes](https://github.com/pyca/cryptography/releases)
- [Changelog](https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pyca/cryptography/compare/3.1.1...3.2

)

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

requirements-test.txt

@@ -8,7 +8,7 @@ websocket-client==0.57.0
 pytz==2020.1
 pycryptodomex==3.9.8
 scrypt==0.8.17
-cryptography==3.1.1
+cryptography==3.2
 ruamel.yaml
 mock==4.0.2
 appdirs==1.4.4