Bump coffeescript from 2.2.4 to 2.3.0

Bumps [coffeescript](https://github.com/jashkenas/coffeescript) from 2.2.4 to 2.3.0.
- [Release notes](https://github.com/jashkenas/coffeescript/releases)
- [Commits](jashkenas/coffeescript@2.2.4...2.3.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package.json

@@ -16,7 +16,7 @@
   "dependencies": {
     "@rails/webpacker": "^3.4.1",
     "babel-preset-react": "^6.24.1",
-    "coffeescript": "2.2.4",
+    "coffeescript": "2.3.0",
     "moment": "^2.22.0",
     "prop-types": "^15.6.1",
     "react": "^16.3.0",

yarn.lock

@@ -1674,9 +1674,9 @@ code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
 
-coffeescript@2.2.4:
-  version "2.2.4"
-  resolved "https://registry.yarnpkg.com/coffeescript/-/coffeescript-2.2.4.tgz#427c038e17a125e52a79fdb3106761753b8585d2"
+coffeescript@2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/coffeescript/-/coffeescript-2.3.0.tgz#d8d77ca5b110f540d52cbdc08e394942c9109994"
 
 collection-visit@^1.0.0:
   version "1.0.0"