Update python versions

Author: celiao

README.md

@@ -21,7 +21,7 @@ Features
 - Supports only [Python versions with TLS
   1.2](http://pyfound.blogspot.com/2017/01/time-to-upgrade-your-python-tls-v12.html).
   Keep it simple!
-- Tested with Python 3.6, 3.7, and 3.8.
+- Tested with Python 3.9, 3.10, and 3.11.
 - One-to-one mapping between *tmdbsimple* methods and TMDb endpoints.
 - Implements all TMDb methods, including Accounts and Authentication.
 - Easy to access data using Python class attributes.

setup.py

@@ -27,9 +27,9 @@
         "Intended Audience :: Developers",
         "Operating System :: OS Independent",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Topic :: Utilities",
     ],
 )