chore: update sponsors (#2753)

Author: vue-bot

themes/vue/_config.yml

@@ -46,6 +46,9 @@ gold_sponsors:
   - url: 'https://neds.com.au/'
     img: neds.png
     name: Neds
+  - url: 'https://icons8.com/'
+    img: icons_8.png
+    name: Icons 8
   - url: 'https://vuejobs.com/?ref=vuejs'
     img: vuejobs.png
     name: VueJobs