Update README.md

Author: Palbahngmiyine

README.md

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 # Solapi SDK for Python
 
-[![Python 3.13.2](https://img.shields.io/badge/python-3.13.2-blue.svg)](https://www.python.org/downloads)
-![Python Supported version](https://img.shields.io/badge/python-%3E%3D3.9-orange)
+[![Python 3.9.21](https://img.shields.io/badge/python-3.9.21-blue.svg)](https://www.python.org/downloads)
+![Python Supported version](https://img.shields.io/badge/python-%3E%3D3.9-orange)