chore: update sponsors [ci skip] (vuejs#9400)

Author: vue-bot

BACKERS.md

@@ -21,7 +21,7 @@ Funds donated via Patreon go directly to support Evan You's full-time work on Vu
     <img width="260px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/stdlib.png">
   </a>
 </p>
-
+  
 <!--special end-->
 
 <h2 align="center">Platinum via Patreon</h2>
@@ -194,6 +194,11 @@ Funds donated via Patreon go directly to support Evan You's full-time work on Vu
           <img width="148px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/marcus_hiles.png">
         </a>
       </td>
+      <td align="center" valign="middle">
+        <a href="https://intygrate.com/" target="_blank">
+          <img width="148px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/intygrate.png">
+        </a>
+      </td>
       <td align="center" valign="middle">
         <a href="https://isleofcode.com/" target="_blank">
           <img width="148px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/isle_of_code.png">

README.md

@@ -31,7 +31,7 @@ Funds donated via Patreon go directly to support Evan You's full-time work on Vu
     <img width="260px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/stdlib.png">
   </a>
 </p>
-
+  
 <!--special end-->
 
 <h3 align="center">Platinum Sponsors</h3>
@@ -199,6 +199,11 @@ Funds donated via Patreon go directly to support Evan You's full-time work on Vu
           <img width="148px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/marcus_hiles.png">
         </a>
       </td>
+      <td align="center" valign="middle">
+        <a href="https://intygrate.com/" target="_blank">
+          <img width="148px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/intygrate.png">
+        </a>
+      </td>
       <td align="center" valign="middle">
         <a href="https://isleofcode.com/" target="_blank">
           <img width="148px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/isle_of_code.png">