add PHP 8.5, drop PHP 8.1

Author: heinrichschiller

.github/workflows/build.yml

@@ -8,7 +8,7 @@ jobs:
         strategy:
             matrix:
                 operating-system: [ ubuntu-latest ]
-                php-versions: [ '8.1', '8.2', '8.3', '8.4' ]
+                php-versions: [ '8.2', '8.3', '8.4', '8.5' ]
         name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }}
 
         steps: