Run tests on PHP 8.4

Author: greg0ire

.github/workflows/continuous-integration.yml

@@ -30,6 +30,7 @@ jobs:
           - "8.1"
           - "8.2"
           - "8.3"
+          - "8.4"
         dependencies:
           - "highest"
         stability:
@@ -38,7 +39,7 @@ jobs:
           - php-version: "7.4"
             dependencies: "lowest"
             stability: "stable"
-          - php-version: "8.3"
+          - php-version: "8.4"
             dependencies: "highest"
             stability: "dev"