Change Star and Support buttons to make all match (#2243)

* Update navbar.html

* Update navbar.html

* Update navbar.html

Author: nimthenimble

_layout/navbar.html

@@ -31,12 +31,12 @@
               </li>
           </ul>
           <div class="navbar-action-buttons d-flex gap-4">
-              <a class="btn btn-outline-dark btn-sm btn-star" href="https://github.com/JuliaLang/julia" target="_blank">⭐ Star</a>
-              <a class="btn btn-danger btn-sm btn-sponsor" href="https://github.com/sponsors/julialang" target="_blank">❤️ Sponsor</a>
+              <a class="github-button" href="https://github.com/JuliaLang/julia" data-icon="octicon-star" data-size="large" data-show-count="false" aria-label="Star JuliaLang/julia on GitHub">Star</a>
+              <a class="github-button" href="https://github.com/sponsors/julialang" data-icon="octicon-heart" data-size="large" aria-label="Sponsor @julialang on GitHub">Sponsor</a>
           </div>
       </div>
   </div>
 </nav>
 <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet">
 
-<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>