Update PHP and Symfony versions in CI

Author: jerowork

.github/workflows/ci.yml

@@ -26,6 +26,7 @@ jobs:
           - '6.2.*'
           - '6.4.*'
           - '7.0.*'
+          - '7.1.*'
         dependencies:
           - 'lowest'
           - 'highest'
@@ -38,8 +39,12 @@ jobs:
             symfony-version: '6.4.*'
           - php-version: '8.0'
             symfony-version: '7.0.*'
+          - php-version: '8.0'
+            symfony-version: '7.1.*'
           - php-version: '8.1'
             symfony-version: '7.0.*'
+          - php-version: '8.1'
+            symfony-version: '7.1.*'
         include:
           - php-version: '8.0'
             symfony-version: '5.4.*'