Add two additional supporters.

www/conservancy/static/sponsors/index.html

@@ -64,6 +64,7 @@ any of its sponsors.</p>
   <li>Alison Chaiken</li>
   <li>Matthew Daniel</li>
   <li>Mark Cohen</li>
+  <li>Michael Dexter</li>
   <li>Aurimas Fiseras</li>
   <li>Karl Fogel</li>
   <li>Richard Fontana</li>
@@ -80,6 +81,7 @@ any of its sponsors.</p>
   <li>Michael Miller</li>
   <li>Pariksheet Nanda</li>
   <li>Deborah A. Nicholson</li>
+  <li>Samuel and Cristine Noble</li>
   <li>Prabowo Saputro</li>
   <li>Christopher Schafer</li>
   <li>Richard Schmeidler</li>