Update quote on home page (#5415)

Author: annagav

cms/templates/cms/home_page.html

@@ -220,9 +220,9 @@ <h3>Join Us at Our Free Online Events</h3>
       {% include "faqs.html" %}
       <section class="quote-section">
         <div class="row quote">
-          <img class="person" src="{% static 'images/grimson.png' %}" alt="">
-          <blockquote class="quote-text">“MicroMasters Programs offer unprecedented access points to advanced degrees, as well as to accelerated professional growth in some of the world's most in-demand fields. Through these programs, learners worldwide can gain the experience of a masters-level course of study, but also the confidence of thriving in an MIT-caliber education.”</blockquote>
-          <p class="quote-author">Eric Grimson, Vice President of Open Learning, MIT  </p>
+          <img class="person" src="{% static 'images/dimitris.png' %}" alt="">
+          <blockquote class="quote-text">“MicroMasters programs offer high-potential learners a glimpse of graduate education at MIT, providing an affordable, accelerated, and convenient path to a master’s degree at the Institute as well as multiple pathway schools. The MicroMasters credential itself also offers worldwide learners an accelerated professional growth opportunity as they move through their careers.”</blockquote>
+          <p class="quote-author">Dimitris Bertsimas, Vice Provost for Open Learning, MIT  </p>
         </div>
         <div class="row quote">
           <img class="person" src="{% static 'images/kornbluth.png' %}" alt="Sally Kornbluth, MIT President">