Update simple_sitemap

composer.json

@@ -67,7 +67,7 @@
         "drupal/redis": "^1.0",
         "drupal/rules": "^3.0@alpha",
         "drupal/security_review": "1.x-dev",
-        "drupal/simple_sitemap": "^2.12",
+        "drupal/simple_sitemap": "^3.3",
         "drupal/sitemap": "^1.5",
         "drupal/smtp": "^1.0@beta",
         "drupal/stage_file_proxy": "^1.0@alpha",