Add PHP 8.4 to CI

Author: alexander-schranz

.github/workflows/build.yml

@@ -31,4 +31,4 @@ jobs:
       os: >-
         ['ubuntu-latest', 'windows-latest']
       php: >-
-        ['8.0', '8.1', '8.2', '8.3']
+        ['8.0', '8.1', '8.2', '8.3', '8.4']