Fix error compare timezone unaware and timezone aware datatimes

Author: joeseakinsarup

office365/runtime/auth/authentication_context.py

@@ -47,7 +47,7 @@ def __init__(self, url, environment=None, allow_ntlm=False, browser_mode=False):
         self._environment = environment
         self._allow_ntlm = allow_ntlm
         self._browser_mode = browser_mode
-        self._token_expires = datetime.max
+        self._token_expires = datetime.max.replace(tzinfo=timezone.utc)
 
     def with_client_certificate(
         self,