add Pythion 3.13 to README

README.md

@@ -5,7 +5,7 @@
 ![coverage](https://img.shields.io/badge/coverage-94%25-brightgreen)
 [![License](https://img.shields.io/github/license/scito/extract_otp_secrets)](https://github.com/scito/extract_otp_secrets/blob/master/LICENSE)
 [![GitHub release (latest SemVer)](https://img.shields.io/github/v/release/scito/extract_otp_secrets?sort=semver)](https://github.com/scito/extract_otp_secrets/releases/latest)  
-![python versions](https://img.shields.io/badge/python-3.8%20%7C%203.9%20%7C%203.10%20%7C%203.11%20%7C%203.12-blue)
+![python versions](https://img.shields.io/badge/python-3.8%20%7C%203.9%20%7C%203.10%20%7C%203.11%20%7C%203.12%20%7C%203.13-blue)
 [![Docker image](https://img.shields.io/badge/docker-image-blue)](https://hub.docker.com/repository/docker/scit0/extract_otp_secrets/general)
 [![Linux](https://img.shields.io/badge/os-linux-yellow)](https://github.com/scito/extract_otp_secrets/releases/latest)
 [![Windows](https://img.shields.io/badge/os-windows-yellow)](https://github.com/scito/extract_otp_secrets/releases/latest)