Update plugins. (#2756)

docs/assets/plugins/fontawesome-free/css/svg-with-js.css

@@ -1,5 +1,5 @@
 /*!
- * Font Awesome Free 5.11.2 by @fontawesome - https://fontawesome.com
+ * Font Awesome Free 5.13.0 by @fontawesome - https://fontawesome.com
  * License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
  */
 svg:not(:root).svg-inline--fa {

docs/assets/plugins/overlayScrollbars/css/OverlayScrollbars.css

@@ -2,13 +2,13 @@
  * OverlayScrollbars
  * https://github.com/KingSora/OverlayScrollbars
  *
- * Version: 1.11.0
+ * Version: 1.12.0
  *
  * Copyright KingSora | Rene Haas.
  * https://github.com/KingSora
  *
  * Released under the MIT license.
- * Date: 29.02.2020
+ * Date: 05.04.2020
  */
 
 /*