Bump govuk_frontend_toolkit to 5.0.1

Update govuk_frontend_toolkit to 5.0.1
https://raw.githubusercontent.com/alphagov/govuk_frontend_toolkit/master
/CHANGELOG.md

# 5.0.1

- Fix role="button" click shim ([PR
#347](alphagov/govuk_frontend_toolkit#347))
- Make font variables lowercase ([PR
#348](alphagov/govuk_frontend_toolkit#348))
- Update selection button documentation ([PR
#350](alphagov/govuk_frontend_toolkit#350))

package.json

@@ -8,7 +8,7 @@
     "node": ">=4.4.7"
   },
   "dependencies": {
-    "govuk_frontend_toolkit": "^5.0.0"
+    "govuk_frontend_toolkit": "^5.0.1"
   },
   "devDependencies": {
     "body-parser": "^1.14.1",