Use latest PHP version for CI

Author: trasher

.github/workflows/ci-linux.yml

@@ -25,7 +25,7 @@ jobs:
 
     strategy:
       matrix:
-        php-versions: [ '8.1', '8.3' ]
+        php-versions: [ '8.1', '8.4' ]
         coverage: [none]
       fail-fast: false