Administration: Correct alignment of the "PHP Update Required" dashboard box title.

Restore one instance of `!important` CSS rule for backward compatibility.

Follow-up to [48129], [48373].

Props whyisjake, sabernhardt, TimothyBlynJacobs, SergeyBiryukov.
Fixes #50788.
Built from https://develop.svn.wordpress.org/trunk@48671


git-svn-id: http://core.svn.wordpress.org/trunk@48433 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/css/common-rtl.css

@@ -2090,7 +2090,7 @@ html.wp-toolbar {
 
 .postbox .inside > p:last-child,
 .rss-widget ul li:last-child {
-	margin-bottom: 1px;
+	margin-bottom: 1px !important;
 }
 
 .postbox.closed h3 {

wp-admin/css/common.css

@@ -2089,7 +2089,7 @@ html.wp-toolbar {
 
 .postbox .inside > p:last-child,
 .rss-widget ul li:last-child {
-	margin-bottom: 1px;
+	margin-bottom: 1px !important;
 }
 
 .postbox.closed h3 {

wp-admin/css/dashboard-rtl.css

@@ -1085,6 +1085,10 @@ a.rsswidget {
 	color: #df3232;
 }
 
+#dashboard_php_nag h2 {
+	display: inline-block;
+}
+
 #dashboard_php_nag p {
 	margin: 12px 0;
 }

wp-admin/css/dashboard.css

@@ -1084,6 +1084,10 @@ a.rsswidget {
 	color: #df3232;
 }
 
+#dashboard_php_nag h2 {
+	display: inline-block;
+}
+
 #dashboard_php_nag p {
 	margin: 12px 0;
 }

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-beta4-48670';
+$wp_version = '5.5-beta4-48671';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.