Site health:

- Add a check to `wp_check_php_version()` whether the current PHP version is lower than the next (desired) minimum version.
- Set the next desired minimum PHP version to 7.2.
- Use that check to update the warnings in the `wp_dashboard_php_nag()` widget, and on the Site Health screen.

Props Clorith, SergeyBiryukov, ironprogrammer, azaozz.
See #56199.

git-svn-id: https://develop.svn.wordpress.org/trunk@54169 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/dashboard.css

@@ -1186,7 +1186,8 @@ a.rsswidget {
 	padding-right: 6px;
 }
 
-#dashboard_php_nag.php-insecure .dashicons-warning {
+#dashboard_php_nag.php-no-security-updates .dashicons-warning,
+#dashboard_php_nag.php-version-lower-than-future-minimum .dashicons-warning {
 	color: #d63638;
 }
 
@@ -1198,14 +1199,15 @@ a.rsswidget {
 	margin: 12px 0;
 }
 
-#dashboard_php_nag h3 {
-	font-weight: 600;
-}
-
 #dashboard_php_nag .button .dashicons-external {
 	line-height: 25px;
 }
 
+.bigger-bolder-text {
+	font-weight: 600;
+	font-size: 14px;
+}
+
 /* =Media Queries
 -------------------------------------------------------------- */