Merge branch 'PHP-8.3' into PHP-8.4

* PHP-8.3:
  Fix test failures in engine_unsafe_empty_string.phpt (#18727)

ext/random/tests/03_randomizer/engine_unsafe_empty_string.phpt

@@ -11,7 +11,7 @@ final class EmptyStringEngine implements Engine
     public function generate(): string
     {
         // Create a non-interned empty string.
-        return preg_replace('/./', '', random_bytes(4));
+        return preg_replace('/./s', '', random_bytes(4));
     }
 }