FSPT-156: fix serving the incorrect crown for the favicon

This updates the design system + jinja to gov uk frontend 4.8. This was
a period before the breaking changes of v5 that bundles the new crown
that services could opt in to.

build.py

@@ -9,7 +9,7 @@
 def build_govuk_assets(static_dist_root="frontend/static/dist"):
 
     DIST_ROOT = "./" + static_dist_root
-    GOVUK_URL = "https://github.com/alphagov/govuk-frontend/releases/download/v4.0.0/release-v4.0.0.zip"
+    GOVUK_URL = "https://github.com/alphagov/govuk-frontend/releases/download/v4.8.0/release-v4.8.0.zip"
     ZIP_FILE = "./govuk_frontend.zip"
     DIST_PATH = DIST_ROOT
     ASSETS_DIR = "/assets"

frontend/templates/base.html

@@ -20,7 +20,7 @@
 
 {% block bodyEnd %}
   <!--[if gt IE 8]><!-->
-  <script nonce="{{ csp_nonce() }}" src="{{ url_for('static', filename='govuk-frontend-4.0.0.min.js') }}"> </script>
+  <script nonce="{{ csp_nonce() }}" src="{{ url_for('static', filename='govuk-frontend-4.8.0.min.js') }}"> </script>
   <script nonce="{{ csp_nonce() }}">
 
     window.addEventListener('load', (event) => {

frontend/templates/head.html

@@ -1,7 +1,7 @@
 <meta name="description" content="{{ base_title }}">
 <meta name="keywords" content="{{ base_title }}">
 <meta name="author" content="{{ service_meta_author }}">
-<!--[if gt IE 8]><!--><link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='govuk-frontend-4.0.0.min.css') }}" /><!--<![endif]-->
+<!--[if gt IE 8]><!--><link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='govuk-frontend-4.8.0.min.css') }}" /><!--<![endif]-->
 <!--[if IE 8]><link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='govuk-frontend/govuk-frontend-ie8-4.0.0.min.css') }}" /><![endif]-->
 {% assets "main_js" %}
     <script nonce="{{ csp_nonce() }}" type="text/javascript" src="{{ ASSET_URL }}" defer></script>

pyproject.toml

@@ -18,7 +18,7 @@ dependencies = [
     "flask-wtf==1.2.2",
     "flask==2.2.5",
     "funding-service-design-utils==5.2.0",
-    "govuk-frontend-jinja==2.3.0",
+    "govuk-frontend-jinja==2.8.0",
     "greenlet==3.1.1",
     "jsmin==3.0.1",
     "msal==1.28.0",