Update pycryptodomex from 3.7.1 to 3.7.2

requirements-test.txt

@@ -6,7 +6,7 @@ ecdsa==0.13
 requests==2.21.0
 websocket-client==0.54.0
 pytz==2018.7
-pycryptodomex==3.7.1
+pycryptodomex==3.7.2
 scrypt==0.8.6
 Events==0.3
 cryptography==2.4.2