Reorder supported tags in descending order

Co-authored-by: Henry Mercer <[email protected]>

Author: mario-campos

README.md

@@ -62,8 +62,8 @@ For compiled languages:
 
 The following versions of the CodeQL Action are currently supported:
 
-- v3
 - v4 (latest)
+- v3
 
 ## Supported versions of the CodeQL Bundle on GitHub Enterprise Server