added iframe tag to allowed tag

Author: nikunj8866

src/wp-admin/css/common.css

@@ -2969,6 +2969,11 @@ div.action-links {
 	line-height: 1.7;
 }
 
+#plugin-information #section-description iframe {
+	width: 100%;
+	height: auto;
+}
+
 #plugin-information #section-screenshots ol {
 	list-style: none;
 	margin: 0;

src/wp-admin/includes/plugin-install.php

@@ -567,6 +567,7 @@ function install_plugin_information() {
 			'alt'   => array(),
 		),
 		'blockquote' => array( 'cite' => true ),
+		'iframe'     => array( 'src' => array(), 'width' => array(), 'height' => array(), 'frameborder' => array(), 'allowfullscreen' => array() ),
 	);
 
 	$plugins_section_titles = array(