update dependencies, autoprefixer config, navbar search input height adjustment

vendor/fontawesome-free/css/fontawesome.css

@@ -1,11 +1,12 @@
 /*!
- * Font Awesome Free 5.9.0 by @fontawesome - https://fontawesome.com
+ * Font Awesome Free 5.10.2 by @fontawesome - https://fontawesome.com
  * License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
  */
 .fa,
 .fas,
 .far,
 .fal,
+.fad,
 .fab {
   -moz-osx-font-smoothing: grayscale;
   -webkit-font-smoothing: antialiased;
@@ -1088,6 +1089,9 @@ readers do not read off random characters that represent icons */
 .fa-copyright:before {
   content: "\f1f9"; }
 
+.fa-cotton-bureau:before {
+  content: "\f89e"; }
+
 .fa-couch:before {
   content: "\f4b8"; }