3367705-http-to-https

Closes #3367705

src/XmlSitemapWriter.php

@@ -148,17 +148,17 @@ class XmlSitemapWriter extends \XMLWriter {
    *   Returns root attributes.
    */
   public function getRootAttributes() {
-    $attributes['xmlns'] = 'http://www.sitemaps.org/schemas/sitemap/0.9';
+    $attributes['xmlns'] = 'https://www.sitemaps.org/schemas/sitemap/0.9';
     // @todo Should content_moderation implement hook_xmlsitemap_root_attributes_alter() instead?
     $attributes['xmlns:xhtml'] = 'http://www.w3.org/1999/xhtml';
     if (\Drupal::state()->get('xmlsitemap_developer_mode')) {
-      $attributes['xmlns:xsi'] = 'http://www.w3.org/2001/XMLSchema-instance';
-      $attributes['xsi:schemaLocation'] = 'http://www.sitemaps.org/schemas/sitemap/0.9';
+      $attributes['xmlns:xsi'] = 'https://www.w3.org/2001/XMLSchema-instance';
+      $attributes['xsi:schemaLocation'] = 'https://www.sitemaps.org/schemas/sitemap/0.9';
       if ($this->isIndex()) {
-        $attributes['xsi:schemaLocation'] .= ' http://www.sitemaps.org/schemas/sitemap/0.9/siteindex.xsd';
+        $attributes['xsi:schemaLocation'] .= ' https://www.sitemaps.org/schemas/sitemap/0.9/siteindex.xsd';
       }
       else {
-        $attributes['xsi:schemaLocation'] .= ' http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd';
+        $attributes['xsi:schemaLocation'] .= ' https://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd';
       }
     }