Switch asan build to Ubuntu 23.04 in Docker

Closes phpGH-12034

Author: iluuu1994

sapi/cli/tests/ext_loading.phpt

@@ -2,9 +2,6 @@
 Extension loading
 --SKIPIF--
 <?php
-if (getenv('SKIP_ASAN')) {
-    die('xleak LSAN bug on Clang 14 crashes this test');
-}
 $extDir = ini_get('extension_dir');
 if (!file_exists($extDir . '/opcache.so') && !file_exists($extDir . '/php_opcache.dll')) {
     die('skip Opcache shared object not found in extension_dir');