Add note for supporting Unity 6

Author: JohannesDeml

README.md

@@ -2,9 +2,9 @@
 
 ![Preview](./preview.png)
 
-[![](https://img.shields.io/github/release-date/JohannesDeml/UnityWebGL-LoadingTest.svg)](https://github.com/JohannesDeml/UnityWebGL-LoadingTest/releases) [![Tested up to Unity 2023.2](https://img.shields.io/badge/tested%20up%20to%20unity-2023.2-green.svg?logo=unity&cacheSeconds=2592000)](https://unity3d.com/get-unity/download/archive)
+[![](https://img.shields.io/github/release-date/JohannesDeml/UnityWebGL-LoadingTest.svg)](https://github.com/JohannesDeml/UnityWebGL-LoadingTest/releases) [![Tested up to Unity 6](https://img.shields.io/badge/tested%20up%20to%20unity-6000.0-green.svg?logo=unity&cacheSeconds=2592000)](https://unity3d.com/get-unity/download/archive)
 
-*Testing Unity's WebGL size and loading time for different versions (2018.4 - 2023.2) and platforms*
+*Testing Unity's WebGL size and loading time for different versions (2018.4 - 6000.0) and platforms*
 
 * [Unity Forum Thread](https://forum.unity.com/threads/webgl-builds-for-mobile.545877/)
 * [Overview page of all builds](https://deml.io/experiments/unity-webgl/)
@@ -26,6 +26,7 @@
 * Github Actions to automatically build the project and deploy it on the server via [Game CI](https://game.ci/)
 * Works with [Unity WebGL Publisher](https://play.unity.com/discover/all-showcases) (Use  [2020.3-lts](https://github.com/JohannesDeml/UnityWebGL-LoadingTest/tree/2020-lts) or [2020.3-lts-urp](https://github.com/JohannesDeml/UnityWebGL-LoadingTest/tree/2020-lts-urp) branch)
 * Tracking multiple Unity versions starting from 2018.4
+* Build targets for webgl1, webgl2 and webgpu
 
 ## Live Demos