Updated version dependency for cryptojwt

Author: rohe

setup.py

@@ -61,7 +61,7 @@ def run_tests(self):
         "Programming Language :: Python :: 3.6",
         "Topic :: Software Development :: Libraries :: Python Modules"],
     install_requires=[
-        "cryptojwt>=0.4.4",
+        "cryptojwt>=0.6.6",
         "pyOpenSSL",
     ],
     zip_safe=False,