Update README stars

Author: colematt

README.md

@@ -3,7 +3,7 @@
 [![Update README ⭐](https://github.com/colematt/advent-code/actions/workflows/update-readme.yml/badge.svg?branch=main)](https://github.com/colematt/advent-code/actions/workflows/update-readme.yml)
 ![Current year](https://img.shields.io/badge/year%20🎄-2025-blue)
 ![Current day](https://img.shields.io/badge/day%20📅-11-blue)
-![This year's stars](https://img.shields.io/badge/stars%20⭐-12-yellow)
+![This year's stars](https://img.shields.io/badge/stars%20⭐-13-yellow)
 ![This year's completed days](https://img.shields.io/badge/days%20completed-6-red)
 
 ## Setup