bump 10.0.x build integration to php 8.1

Author: mglaman

.github/workflows/php.yml

@@ -137,7 +137,7 @@ jobs:
           - "^8.9"
           - "^9.0"
         include:
-          - php-version: "8.0"
+          - php-version: "8.1"
             drupal: "10.0.x-dev"
             experimental: true
     steps: