Merge pull request #23 from uJhin/1.2.2

Update setup.py

Author: uJhin

setup.py

@@ -26,7 +26,8 @@
     python_requires = '>=3.8',
     classifiers     = [
         'Programming Language :: Python :: 3.8',
-        'Programming Language :: Python :: 3.9'
+        'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10'
     ],
     keywords        = [
         'Upbit',