Update copyright year in README (GH-100863)

Co-authored-by: HARSHA VARDHAN <[email protected]>

Author: ned-deily

README.rst

@@ -245,7 +245,7 @@ Copyright and License Information
 ---------------------------------
 
 
-Copyright © 2001-2022 Python Software Foundation.  All rights reserved.
+Copyright © 2001-2023 Python Software Foundation.  All rights reserved.
 
 Copyright © 2000 BeOpen.com.  All rights reserved.