chore: update sponsors

Author: kamilmysliwiec

img/logos/dinii-logo.png

@@ -528,6 +528,9 @@ <h5>Principal sponsors</h5>
           <a href="https://mojam.co/" target="_blank">
             <img src="img/logos/mojam-logo.png" />
           </a>
+          <a href="https://marblism.com?utm_source=mui" target="_blank">
+            <img src="img/logos/marblism-logo.png" />
+          </a>
           <a href="https://valor-software.com/" target="_blank">
             <img src="img/logos/valor-software.png" />
           </a>
@@ -599,6 +602,9 @@ <h5>Silver sponsors</h5>
           <a href="https://www.casinoszondercruks.nu/" target="_blank" rel="nofollow">
             <img src="img/logos/casinos-zonder-logo.png" class="silver-logo m-l-10 m-r-10" />
           </a>
+          <a href="https://www.dinii.jp/" target="_blank" rel="nofollow">
+            <img src="img/logos/dinii-logo.png" class="silver-logo m-l-10 m-r-10" />
+          </a>
         </div>
         <div class="support-section sponsor-tiles support-section--bronze">
           <h5>Sponsors / Partners</h5>