ci(workflows): upgrade PHP version

Signed-off-by: Edward Ly <[email protected]>

Author: edward-ly

.github/workflows/integration_test.yml

@@ -26,7 +26,7 @@ jobs:
       # do not stop on another job's failure
       fail-fast: false
       matrix:
-        php-versions: [ '8.1' ]
+        php-versions: [ '8.3' ]
         databases: [ 'sqlite' ]
         server-versions: [ 'master', 'stable31', 'stable30' ]