Bump cryptography from 2.7 to 3.2 in /test

Bumps [cryptography](https://github.com/pyca/cryptography) from 2.7 to 3.2.
- [Release notes](https://github.com/pyca/cryptography/releases)
- [Changelog](https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst)
- [Commits](pyca/cryptography@2.7...3.2)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

test/upstream-requirements-py27.txt

@@ -18,7 +18,7 @@ configparser==4.0.2
 contextlib2==0.6.0.post1
 cookies==2.2.1
 coverage==4.5.4
-cryptography==2.7
+cryptography==3.2
 DateTime==4.3
 docker==4.1.0
 docutils==0.15.2

test/upstream-requirements-py37.txt

@@ -12,7 +12,7 @@ cffi==1.12.3
 cfn-lint==0.24.4
 chardet==3.0.4
 coverage==4.5.4
-cryptography==2.7
+cryptography==3.2
 DateTime==4.3
 docker==4.1.0
 docutils==0.15.2