Update masthead to HeroDevs EOL (#39749)

* feat(masthead):  Update masthead to HeroDevs EOL

Add box-arrow-up-right icon.

* Update masthead.html

* Update icons.html

---------

Co-authored-by: Mark Otto <markdotto@gmail.com>

site/layouts/partials/home/masthead.html

@@ -1,9 +1,14 @@
 <div class="bd-masthead mb-3" id="content">
   <div class="container-xxl bd-gutter">
     <div class="col-md-8 mx-auto text-center">
-      <a class="d-flex flex-column flex-lg-row justify-content-center align-items-center mb-4 text-dark lh-sm text-decoration-none" href="https://blog.getbootstrap.com/">
-        <strong class="d-sm-inline-block p-2 me-2 mb-2 mb-lg-0 rounded-3 masthead-notice">New in v5.3</strong>
-        <span class="text-body-secondary">Color mode support, expanded color palette, and more!</span>
+      <a class="d-flex flex-column flex-lg-row justify-content-center align-items-center mb-4 text-dark lh-sm text-decoration-none" href="https://www.herodevs.com/support/nes-bootstrap?utm_source=Bootstrap_site&utm_medium=Banner&utm_campaign=v3and4_eol">
+        <span class="d-sm-inline-flex align-items-center gap-1 py-2 px-3 me-2 mb-2 mb-lg-0 rounded-5 masthead-notice">
+          <span class="fw-semibold">
+            New!
+          </span>
+          Never-Ending Support for Bootstrap
+          <svg class="bi" style="width: 20px; height: 20px;"><use xlink:href="#arrow-right-short"></use></svg>
+        </span>
       </a>
       <img class="d-none d-sm-block mx-auto mb-3"
            srcset="/docs/{{ .Site.Params.docs_version }}/assets/brand/bootstrap-logo-shadow.png,

site/layouts/partials/icons.html

@@ -2,6 +2,9 @@
   <symbol id="arrow-right" viewBox="0 0 16 16">
     <path fill-rule="evenodd" d="M1 8a.5.5 0 0 1 .5-.5h11.793l-3.147-3.146a.5.5 0 0 1 .708-.708l4 4a.5.5 0 0 1 0 .708l-4 4a.5.5 0 0 1-.708-.708L13.293 8.5H1.5A.5.5 0 0 1 1 8z"/>
   </symbol>
+  <symbol id="arrow-right-short" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 8a.5.5 0 0 1 .5-.5h5.793L8.146 5.354a.5.5 0 1 1 .708-.708l3 3a.5.5 0 0 1 0 .708l-3 3a.5.5 0 0 1-.708-.708L10.293 8.5H4.5A.5.5 0 0 1 4 8"/>
+  </symbol>
   <symbol id="book-half" viewBox="0 0 16 16">
     <path d="M8.5 2.687c.654-.689 1.782-.886 3.112-.752 1.234.124 2.503.523 3.388.893v9.923c-.918-.35-2.107-.692-3.287-.81-1.094-.111-2.278-.039-3.213.492V2.687zM8 1.783C7.015.936 5.587.81 4.287.94c-1.514.153-3.042.672-3.994 1.105A.5.5 0 0 0 0 2.5v11a.5.5 0 0 0 .707.455c.882-.4 2.303-.881 3.68-1.02 1.409-.142 2.59.087 3.223.877a.5.5 0 0 0 .78 0c.633-.79 1.814-1.019 3.222-.877 1.378.139 2.8.62 3.681 1.02A.5.5 0 0 0 16 13.5v-11a.5.5 0 0 0-.293-.455c-.952-.433-2.48-.952-3.994-1.105C10.413.809 8.985.936 8 1.783z"/>
   </symbol>