Update Python dependencies

Author: mdmintz

requirements.txt

@@ -36,7 +36,8 @@ parameterized==0.7.4
 soupsieve==1.9.6;python_version<"3.5"
 soupsieve==2.0.1;python_version>="3.5"
 beautifulsoup4==4.9.1
-cryptography==3.0
+cryptography==3.0;python_version<"3.6"
+cryptography==3.1;python_version>="3.6"
 pyopenssl==19.1.0
 prompt-toolkit==1.0.18;python_version<"3.6.1"
 prompt-toolkit==3.0.6;python_version>="3.6.1"

setup.py

@@ -128,7 +128,8 @@
         'soupsieve==1.9.6;python_version<"3.5"',
         'soupsieve==2.0.1;python_version>="3.5"',
         'beautifulsoup4==4.9.1',
-        'cryptography==3.0',
+        'cryptography==3.0;python_version<"3.6"',
+        'cryptography==3.1;python_version>="3.6"',
         'pyopenssl==19.1.0',
         'prompt-toolkit==1.0.18;python_version<"3.6.1"',
         'prompt-toolkit==3.0.6;python_version>="3.6.1"',