Update Tachyons.

package-lock.json

@@ -12416,9 +12416,9 @@
       "integrity": "sha512-sh/LFb9MoPt76sBKUSHP1MlMVRBw6zDiv11Ag/t5M4wS1mxQhFnNkDzhGdH6/xIwPO5tqwlNnXfiTI5XwDCJzA=="
     },
     "tachyons-sass": {
-      "version": "4.7.4",
-      "resolved": "https://registry.npmjs.org/tachyons-sass/-/tachyons-sass-4.7.4.tgz",
-      "integrity": "sha512-Z03O0dVpHxGfKxkkk8QSQKdHYGqpS47URS0aV2q7S+3hYxomsvGq5g4AoR0VMkOMvGOpSmXCZnbm1gE5pbO8eQ==",
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/tachyons-sass/-/tachyons-sass-4.8.1.tgz",
+      "integrity": "sha512-2lyzsFRpFVCjAi7FzuhD6nRUkj6wVH81850AGvxPD5C9G8n58ok5iIuwIm+s/8CaNiqzcnGXzGthJ4Kiq2Y5Og==",
       "requires": {
         "tachyons": "4.8.1"
       }

package.json

@@ -106,7 +106,7 @@
     "isotope-layout": "^3.0.4",
     "jquery": "1.12.4 - 3",
     "jquery-bridget": "^2.0.1",
-    "tachyons-sass": "~4.7",
+    "tachyons-sass": "~4.8",
     "wpapi": "^1.1.2"
   }
 }

yarn.lock

@@ -6869,13 +6869,13 @@ table@^4.0.1:
     slice-ansi "0.0.4"
     string-width "^2.0.0"
 
-tachyons-sass@~4.7:
-  version "4.7.4"
-  resolved "https://registry.yarnpkg.com/tachyons-sass/-/tachyons-sass-4.7.4.tgz#47199472f444f1451692ec4509c5da700569ea57"
+tachyons-sass@~4.8:
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/tachyons-sass/-/tachyons-sass-4.8.1.tgz#5e7b85eb8a1e3cccf45acdff09e97f4ad1844d59"
   dependencies:
-    tachyons "^4.7.4"
+    tachyons "^4.8.1"
 
-tachyons@^4.7.4:
+tachyons@^4.8.1:
   version "4.8.1"
   resolved "https://registry.yarnpkg.com/tachyons/-/tachyons-4.8.1.tgz#9a3183feecb3240c4dcefee7feecc8259acd7381"