chore: update opencollective sponsors

Author: vkarpov15

index.pug

@@ -379,6 +379,9 @@ html(lang='en')
               <a rel="sponsored" href="https://goread.io/buy-instagram-likes">
                 <img class="sponsor" src="https://goread.io/assets/images/Goreadlogo.png" style="height: 100px" alt="Buy Instagram Likes">
               </a>
+              <a rel="sponsored" href="https://followerspromotion.com/buy-instagram-likes/">
+                <img class="sponsor" src="https://codebarbarian-images.s3.amazonaws.com/followerspromo.png" style="height: 100px" alt="Buy Instagram Likes">
+              </a>
             </div>
           </div>