Update stubs

Author: phpstan-bot

Diff for: stubs/ext/dom/Dom/import_simplexml.php

@@ -4,6 +4,6 @@
 
 #endif
 #[\Since('8.4')]
-function import_simplexml(object $node): \Dom\Element
+function import_simplexml(object $node): \Dom\Attr|\Dom\Element
 {
 }

Diff for: stubs/ext/dom/dom_import_simplexml.php

@@ -1,6 +1,12 @@
 <?php 
 
 #endif
+#[\Until('8.2')]
 function dom_import_simplexml(object $node): \DOMElement
 {
+}
+#endif
+#[\Since('8.2')]
+function dom_import_simplexml(object $node): \DOMAttr|\DOMElement
+{
 }