update readme

Author: ckoegel

README.md

@@ -2,13 +2,12 @@
 
 [![Deploy](https://github.com/Bandwidth/node-sdk/actions/workflows/deploy.yml/badge.svg)](https://github.com/Bandwidth/node-sdk/actions/workflows/deploy.yml)
 
-### Test Matrix
-| **OS** | **Node** |
-|:---:|:---:|
+|    **OS**    |  **Node**  |
+|:------------:|:----------:|
 | Windows 2019 | 18, 20, 22 |
 | Windows 2022 | 18, 20, 22 |
-| Ubuntu 20.04 | 18, 20, 22 |
 | Ubuntu 22.04 | 18, 20, 22 |
+| Ubuntu 24.04 | 18, 20, 22 |
 
 #### Available on NPM
 ```