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
alphagov#347](alphagov/govuk_frontend_toolkit#347))
- Make font variables lowercase ([PR
alphagov#348](alphagov/govuk_frontend_toolkit#348))
- Update selection button documentation ([PR
alphagov#350](alphagov/govuk_frontend_toolkit#350))

package.json

@@ -22,7 +22,7 @@
     "express-session": "^1.13.0",
     "express-writer": "0.0.4",
     "govuk-elements-sass": "2.2.0",
-    "govuk_frontend_toolkit": "^5.0.0",
+    "govuk_frontend_toolkit": "^5.0.1",
     "govuk_template_jinja": "0.19.0",
     "gulp": "^3.9.1",
     "gulp-clean": "^0.3.2",