update metadata

Author: joeljonsson

setup.cfg

@@ -12,11 +12,10 @@ classifiers =
     Intended Audience :: Developers
     License :: OSI Approved :: Apache Software License
     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
 
 [options]
 zip_safe = False