feature: manually update the url and image for geoffray gruel, who is identified as a guest by the open collective api

Author: renanfranca

.vitepress/data/sponsors/bronzeSponsors.ts

@@ -4,7 +4,7 @@ export const bronze: Sponsor[] = [
   {
     memberId: 720740,
     name: 'Geoffray Gruel',
-    url: 'https://opencollective.com/guest-b627ebd3',
+    url: 'https://www.linkedin.com/in/ggruel/',
     img: '/sponsors/guest-b627ebd3-720740.png',
   },
 ];