Bump cryptography from 2.9.2 to 3.3.2

Bumps [cryptography](https://github.com/pyca/cryptography) from 2.9.2 to 3.3.2.
- [Release notes](https://github.com/pyca/cryptography/releases)
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@2.9.2...3.3.2)

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

Author: dependabot[bot]

requirements.txt

@@ -5,7 +5,7 @@ celery==4.4.5
 django~=3.1.7
 django-widget-tweaks==1.4.8
 docker==4.2.1
-cryptography==2.9.2
+cryptography==3.3.2
 jinja2==3.0.0a1
 jsonpath-ng==1.5.1
 netaddr==0.7.19