Bump remaining NPM packages used on client-side

Means that only the following packages will now be
out of date:

1. govuk_template_jinja
2. jquery

Reasons:

GOVUK Template Jinja

This bumps it to 0.24.1, after which the only
changes are to add analytics tracking to the
GOV.UK logo and cookie banner.

We don't need to track either of these and they
were added for GOVUK analytics work.

jQuery

jQuery stops supporting IE<9 after version
1.12. This is pretty much our support now but if
we move to IE>8 we shouldn't do it by bumping the
version. This would just increase the amount of
broken JS we ship to IE8.

Also: both are deprecated and we will move off
them in the near future.

package.json

@@ -21,9 +21,9 @@
     "@babel/core": "7.4.0",
     "@babel/preset-env": "7.4.2",
     "diff-dom": "https://github.com/fiduswriter/diffDOM/archive/v3.1.0.tar.gz",
-    "govuk-elements-sass": "3.1.2",
-    "govuk_frontend_toolkit": "7.2.0",
-    "govuk_template_jinja": "0.24.0",
+    "govuk-elements-sass": "3.1.3",
+    "govuk_frontend_toolkit": "8.1.0",
+    "govuk_template_jinja": "0.24.1",
     "gulp": "4.0.0",
     "gulp-add-src": "1.0.0",
     "gulp-babel": "8.0.0",
@@ -37,7 +37,7 @@
     "jquery": "1.12.4",
     "query-command-supported": "1.0.0",
     "textarea-caret": "3.1.0",
-    "timeago": "1.6.1"
+    "timeago": "1.6.5"
   },
   "devDependencies": {
     "gulp-css-url-adjuster": "0.2.3",