Drop support for Statamic 5

Author: duncanmcclean

.github/workflows/run-tests.yml

@@ -27,8 +27,8 @@ jobs:
             matrix:
                 os: [ubuntu-latest]
                 php: [8.3, 8.4]
-                laravel: [11.*, 12.*]
-                statamic: [5.*, 6.*]
+                laravel: [12.*]
+                statamic: [6.*]
                 dependency-version: [prefer-stable]
 
         name: P${{ matrix.php }} - L${{ matrix.laravel }} - S${{ matrix.statamic }} - ${{ matrix.dependency-version }} - ${{ matrix.os }}