Remove the upper restrictions on the websockets dependency.

Author: tonyandrewmeyer

setup.py

@@ -25,9 +25,9 @@
         'macaroonbakery>=1.1,<2.0',
         'pyRFC3339>=1.0,<2.0',
         'pyyaml>=5.1.2',
-        'websockets>=8.1,<9.0 ; python_version=="3.8"',
-        'websockets>=9.0,<10.0 ; python_version=="3.9"',
-        'websockets>=10.0; python_version>"3.9"',
+        'websockets>=8.1 ; python_version=="3.8"',
+        'websockets>=9.0 ; python_version=="3.9"',
+        'websockets>=10.0 ; python_version>"3.9"',
         'paramiko>=2.4.0',
         'pyasn1>=0.4.4',
         'toposort>=1.5,<2',