Issue #3098623 by gbyte.co: Use https when submitting sitemaps to search engines

modules/simple_sitemap_engines/config/install/simple_sitemap_engines.simple_sitemap_engine.bing.yml

 id: bing
 label: 'Bing'
-url: http://www.bing.com/ping?sitemap=[sitemap]
+url: https://www.bing.com/ping?sitemap=[sitemap]
 sitemap_variants: {  }

modules/simple_sitemap_engines/config/install/simple_sitemap_engines.simple_sitemap_engine.google.yml

 id: google
 label: 'Google'
-url: http://www.google.com/ping?sitemap=[sitemap]
+url: https://www.google.com/ping?sitemap=[sitemap]
 sitemap_variants: {  }