update dependencies

vendor/fontawesome-free/less/_variables.less

@@ -6,7 +6,7 @@
 @fa-font-display:     auto;
 @fa-line-height-base: 1;
 @fa-css-prefix:       fa;
-@fa-version:          "5.7.2";
+@fa-version:          "5.8.1";
 @fa-border-color:     #eee;
 @fa-inverse:          #fff;
 @fa-li-width:         2em;
@@ -24,6 +24,7 @@
 @fa-var-adversal: "\f36a";
 @fa-var-affiliatetheme: "\f36b";
 @fa-var-air-freshener: "\f5d0";
+@fa-var-airbnb: "\f834";
 @fa-var-algolia: "\f36c";
 @fa-var-align-center: "\f037";
 @fa-var-align-justify: "\f039";
@@ -108,6 +109,7 @@
 @fa-var-battery-half: "\f242";
 @fa-var-battery-quarter: "\f243";
 @fa-var-battery-three-quarters: "\f241";
+@fa-var-battle-net: "\f835";
 @fa-var-bed: "\f236";
 @fa-var-beer: "\f0fc";
 @fa-var-behance: "\f1b4";
@@ -145,6 +147,7 @@
 @fa-var-book-open: "\f518";
 @fa-var-book-reader: "\f5da";
 @fa-var-bookmark: "\f02e";
+@fa-var-bootstrap: "\f836";
 @fa-var-bowling-ball: "\f436";
 @fa-var-box: "\f466";
 @fa-var-box-open: "\f49e";
@@ -158,6 +161,7 @@
 @fa-var-broom: "\f51a";
 @fa-var-brush: "\f55d";
 @fa-var-btc: "\f15a";
+@fa-var-buffer: "\f837";
 @fa-var-bug: "\f188";
 @fa-var-building: "\f1ad";
 @fa-var-bullhorn: "\f0a1";
@@ -246,6 +250,7 @@
 @fa-var-chevron-up: "\f077";
 @fa-var-child: "\f1ae";
 @fa-var-chrome: "\f268";
+@fa-var-chromecast: "\f838";
 @fa-var-church: "\f51d";
 @fa-var-circle: "\f111";
 @fa-var-circle-notch: "\f1ce";
@@ -417,6 +422,7 @@
 @fa-var-ethernet: "\f796";
 @fa-var-etsy: "\f2d7";
 @fa-var-euro-sign: "\f153";
+@fa-var-evernote: "\f839";
 @fa-var-exchange-alt: "\f362";
 @fa-var-exclamation: "\f12a";
 @fa-var-exclamation-circle: "\f06a";
@@ -677,6 +683,7 @@
 @fa-var-invision: "\f7b0";
 @fa-var-ioxhost: "\f208";
 @fa-var-italic: "\f033";
+@fa-var-itch-io: "\f83a";
 @fa-var-itunes: "\f3b4";
 @fa-var-itunes-note: "\f3b5";
 @fa-var-java: "\f4e4";
@@ -997,6 +1004,7 @@
 @fa-var-sad-cry: "\f5b3";
 @fa-var-sad-tear: "\f5b4";
 @fa-var-safari: "\f267";
+@fa-var-salesforce: "\f83b";
 @fa-var-sass: "\f41e";
 @fa-var-satellite: "\f7bf";
 @fa-var-satellite-dish: "\f7c0";
@@ -1090,6 +1098,7 @@
 @fa-var-spa: "\f5bb";
 @fa-var-space-shuttle: "\f197";
 @fa-var-speakap: "\f3f3";
+@fa-var-speaker-deck: "\f83c";
 @fa-var-spider: "\f717";
 @fa-var-spinner: "\f110";
 @fa-var-splotch: "\f5bc";
@@ -1145,6 +1154,7 @@
 @fa-var-swatchbook: "\f5c3";
 @fa-var-swimmer: "\f5c4";
 @fa-var-swimming-pool: "\f5c5";
+@fa-var-symfony: "\f83d";
 @fa-var-synagogue: "\f69b";
 @fa-var-sync: "\f021";
 @fa-var-sync-alt: "\f2f1";
@@ -1314,6 +1324,8 @@
 @fa-var-wallet: "\f555";
 @fa-var-warehouse: "\f494";
 @fa-var-water: "\f773";
+@fa-var-wave-square: "\f83e";
+@fa-var-waze: "\f83f";
 @fa-var-weebly: "\f5cc";
 @fa-var-weibo: "\f18a";
 @fa-var-weight: "\f496";
@@ -1351,6 +1363,7 @@
 @fa-var-xing-square: "\f169";
 @fa-var-y-combinator: "\f23b";
 @fa-var-yahoo: "\f19e";
+@fa-var-yammer: "\f840";
 @fa-var-yandex: "\f413";
 @fa-var-yandex-international: "\f414";
 @fa-var-yarn: "\f7e3";