Update README badges for tests and Python versions

Updated unit test badge and Python version compatibility in README.

Author: RoryBarnes

README.md

@@ -16,16 +16,16 @@
     <img src="https://img.shields.io/badge/license-MIT-purple.svg">
   </a>
   <a href="https://VirtualPlanetaryLaboratory.github.io/vplanet/conduct.html"><img src="https://img.shields.io/badge/Code%20of-Conduct-7d93c7.svg"></a><br>
-  <img src="https://img.shields.io/badge/Unit%20Tests-5-darkblue.svg">
+  <img src="https://img.shields.io/badge/Unit%20Tests-10-darkblue.svg">
   </a>
   <a href="https://github.com/VirtualPlanetaryLaboratory/multi-planet//actions/workflows/tests.yml">
     <img src="https://github.com/VirtualPlanetaryLaboratory/multi-planet//actions/workflows/tests.yml/badge.svg"/>
   </a>
-  <img src="https://img.shields.io/badge/Python-3.6--3.9-orange.svg"/><br>
+  <img src="https://img.shields.io/badge/Python-3.9--3.14-orange.svg"/><br>
   <a href="https://github.com/VirtualPlanetaryLaboratory/multi-planet//actions/workflows/pip-install.yml">
     <img src="https://github.com/VirtualPlanetaryLaboratory/multi-planet//actions/workflows/pip-install.yml/badge.svg"/>
   </a>
-  <img src="https://img.shields.io/badge/Python-3.7--3.9-orange.svg"/>
+  <img src="https://img.shields.io/badge/Python-3.9--3.14-orange.svg"/>
   <img src = "https://img.shields.io/badge/Platforms-Linux_|%20macOS-darkgreen.svg?style=flat">
 </p>