Bust GitHub Camo cache on license badge URL

Author: xnoire666

README.md

@@ -3,7 +3,7 @@
 [![Latest Version on Packagist](https://img.shields.io/packagist/v/xnoire666/db-diff.svg?style=flat-square)](https://packagist.org/packages/xnoire666/db-diff)
 [![Tests](https://img.shields.io/github/actions/workflow/status/xnoire666/db-diff/tests.yml?branch=master&label=tests&style=flat-square)](https://github.com/xnoire666/db-diff/actions/workflows/tests.yml)
 [![Total Downloads](https://img.shields.io/packagist/dt/xnoire666/db-diff.svg?style=flat-square)](https://packagist.org/packages/xnoire666/db-diff)
-[![License](https://img.shields.io/packagist/l/xnoire666/db-diff.svg?style=flat-square)](https://packagist.org/packages/xnoire666/db-diff)
+[![License](https://img.shields.io/packagist/l/xnoire666/db-diff.svg?style=flat-square&cacheSeconds=300)](https://packagist.org/packages/xnoire666/db-diff)
 
 Laravel artisan command that diffs two MySQL databases and generates SQL files describing what the second one is missing — perfect for syncing a staging schema against production.