Update python classifier in setup.cfg

As per the current release tested runtime, we test
till python 3.11 so updating the same in python
classifier in setup.cfg

Change-Id: I462764b6ff8f8da0270daba82f2d6937070ba3c7

Author: Ghanshyam Mann

setup.cfg

@@ -21,6 +21,7 @@ classifier =
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
 
 [files]
 packages =