Bump cryptography from 2.8.0 to 39.0.1

Bumps [cryptography](https://github.com/pyca/cryptography) from 2.8.0 to 39.0.1.
- [Release notes](https://github.com/pyca/cryptography/releases)
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@2.8...39.0.1)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.in

@@ -1,5 +1,5 @@
 asn1==2.2.0 # asn1 2.3.0 introduces enum34 as a dependency, which causes problems on some envs
-cryptography==2.8.0
+cryptography==39.0.1
 cffi==1.14.3
 future==0.18.2
 itsdangerous==1.1.0

requirements.txt

@@ -14,7 +14,7 @@ cffi==1.14.3
     #   cryptography
 chardet==3.0.4
     # via requests
-cryptography==2.8
+cryptography==39.0.1
     # via
     #   -r requirements.in
     #   pyopenssl
@@ -43,10 +43,7 @@ pyyaml==5.2
 requests==2.21.0
     # via -r requirements.in
 six==1.10.0
-    # via
-    #   cryptography
-    #   protobuf
-    #   pyopenssl
+    # via pyopenssl
 urllib3==1.24.3
     # via
     #   -r requirements.in
@@ -55,6 +52,3 @@ wheel==0.33.6
     # via -r requirements.in
 wrapt==1.11.2
     # via deprecated
-
-# The following packages are considered to be unsafe in a requirements file:
-# setuptools