Add 3.6.0 announcement

Author: QuLogic

docs/body.html

@@ -121,6 +121,11 @@ <h1>Matplotlib: Visualization with Python</h1>
           <!-- optional important news -->
           <h3>News</h3>
           <div class="news__item--highlight">
+            <h5 class="date">September 16, 2022</h5>
+            <a href="https://discourse.matplotlib.org/t/matplotlib-announce-ann-matplotlib-3-6-0/23129" class="link--offsite">Matplotlib 3.6.0 Released</a>
+          </div>
+
+          <div class="news__item">
             <h5 class="date">May 2, 2022</h5>
             <a href="https://discourse.matplotlib.org/t/matplotlib-announce-ann-matplotlib-3-5-2/22805" class="link--offsite">Matplotlib 3.5.2 Released</a>
           </div>