update to font awesome 5.7.2

Signed-off-by: Pascal Andy <pascal@firepress.org>

Author: pascalandy

partials/custom_header.hbs

@@ -3,9 +3,10 @@
 <!-- CSS elements -->
 <link rel="stylesheet" type="text/css" href="{{asset "css_firepress/entry.css"}}" />
 
-<!-- CSS Icon via fontawesome 5 -->
-<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.1/css/v4-shims.css">
-<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.1/css/all.css" integrity="sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr" crossorigin="anonymous">
+<!-- CSS Icon via Font Awesome -->
+<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/v4-shims.css">
+<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css" integrity="sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr" crossorigin="anonymous">
+
 
 <!-- CSS Code Syntax (highlight agate) -->
 <!-- Line number is not supported > http://highlightjs.readthedocs.io/en/latest/line-numbers.html -->