Add python 3.13 support to README (#363)

Author: stellasia

README.md

@@ -26,7 +26,8 @@ A list of Neo4j GenAI-related features can also be found at [Neo4j GenAI Ecosyst
 ## 🐍 Python Version Support
 
 | Version | Supported? |
-| ------- | ---------: |
+|---------| ---------: |
+| 3.13    | ✓    |
 | 3.12    | ✓    |
 | 3.11    | ✓    |
 | 3.10    | ✓    |