Add Windows to testing matrix

Author: duncanmcclean

.github/workflows/tests.yml

@@ -18,8 +18,13 @@ jobs:
         laravel: [12.*]
         stability: [prefer-lowest, prefer-stable]
         os: [ubuntu-latest]
+        include:
+          - os: windows-latest
+            php: 8.5
+            laravel: 12.*
+            stability: prefer-stable
 
-    name: P${{ matrix.php }} - L${{ matrix.laravel }} - ${{ matrix.stability }}
+    name: P${{ matrix.php }} - L${{ matrix.laravel }} - ${{ matrix.stability }} - ${{ matrix.os }}
 
     steps:
       - name: Checkout code