update Font Awesome (#2053)

* update Font Awesome

REF: https://fontawesome.com/changelog/latest

* Update _includes/scripts.html

Co-Authored-By: coliff <[email protected]>

Author: coliff

_includes/scripts.html

@@ -9,7 +9,7 @@
   {% endfor %}
 {% else %}
   <script src="{{ '/assets/js/main.min.js' | relative_url }}"></script>
-  <script defer src="https://use.fontawesome.com/releases/v5.6.0/js/all.js" integrity="sha384-z9ZOvGHHo21RqN5De4rfJMoAxYpaVoiYhuJXPyVmSs8yn20IE3PmBM534CffwSJI" crossorigin="anonymous"></script>
+  <script data-search-pseudo-elements defer src="https://use.fontawesome.com/releases/v5.7.1/js/all.js" integrity="sha384-eVEQC9zshBn0rFj4+TU78eNA19HMNigMviK/PU/FFjLXqa/GKPgX58rvt5Z8PLs7" crossorigin="anonymous"></script>
 {% endif %}
 
 {% if site.search == true or page.layout == "search" %}