[RUBY-3223] Update favicon and icon links in defra_ruby_template.html…

….erb

app/views/layouts/defra_ruby_template.html.erb

@@ -7,12 +7,12 @@
   <meta name="theme-color" content="#0b0c0c">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
 
-  <link rel="shortcut icon" href="<%= asset_path "favicon.ico" %>" type="image/x-icon" />
-  <link rel="mask-icon" href="<%= asset_path "govuk-logotype-crown.png" %>">
-  <link rel="apple-touch-icon" sizes="180x180" href="<%= asset_path "govuk-apple-touch-icon-180x180.png" %>">
-  <link rel="apple-touch-icon" sizes="167x167" href="<%= asset_path "govuk-apple-touch-icon-167x167.png" %>">
-  <link rel="apple-touch-icon" sizes="152x152" href="<%= asset_path "govuk-apple-touch-icon-152x152.png" %>">
-  <link rel="apple-touch-icon" href="<%= asset_path "govuk-apple-touch-icon.png" %>">
+  <link rel="shortcut icon" href="<%= asset_path "images/favicon.ico" %>" type="image/x-icon" />
+  <link rel="icon" sizes="48x48" href="<%= asset_path "images/favicon.ico" %>">
+  <link rel="icon" sizes="any" href="<%= asset_path "images/favicon.svg" %>" type="image/svg+xml">
+  <link rel="mask-icon" href="<%= asset_path "images/govuk-icon-mask.svg" %>" color="#0b0c0c">
+  <link rel="apple-touch-icon" href="<%= asset_path "images/govuk-icon-180.png" %>">
+  <link rel="manifest" href="<%= asset_path "manifest.json" %>">
 
   <%= yield :head %>
   <meta property="og:image" content="<%= asset_path "govuk-opengraph-image.png" %>">
@@ -47,7 +47,7 @@
             </svg>
             <!--<![endif]-->
             <!--[if IE 8]>
-            <img src="/assets/images/govuk-logotype-tudor-crown.png" class="govuk-header__logotype-crown-fallback-image" width="32" height="30" alt="">
+            <img src="<%= asset_path "images/govuk-icon-mask.svg" %>" class="govuk-header__logotype-crown-fallback-image" width="32" height="30" alt="">
             <![endif]-->
           </span>
         </a>