fix(package): update @fortawesome/free-solid-svg-icons to version 5.12.0

Closes #918

Author: greenkeeper[bot]

package.json

@@ -30,7 +30,7 @@
     "@fortawesome/fontawesome-svg-core": "1.2.26",
     "@fortawesome/free-brands-svg-icons": "5.11.2",
     "@fortawesome/free-regular-svg-icons": "5.12.0",
-    "@fortawesome/free-solid-svg-icons": "5.11.2",
+    "@fortawesome/free-solid-svg-icons": "5.12.0",
     "@fortawesome/vue-fontawesome": "0.1.8",
     "ag-grid-community": "22.0.0",
     "ag-grid-vue": "22.0.0",