chore: update sponsors (#2747)

Author: vue-bot

themes/vue/_config.yml

@@ -103,6 +103,9 @@ gold_sponsors:
   - url: 'https://www.vpsserver.com'
     img: vpsserver_com.png
     name: VPSServer.com
+  - url: 'https://aussiecasinohex.com/'
+    img: aussiecasinohex.svg
+    name: AussieCasinoHEX
 silver_sponsors:
   - url: 'https://roadster.com'
     img: roadster.png
@@ -113,9 +116,12 @@ silver_sponsors:
   - url: 'https://www.thecasinodb.com'
     img: isolutions_uk_limited.png
     name: iSolutions UK Limited
-  - url: https://teamextension.io
+  - url: 'https://teamextension.io'
     img: team_extension_north_america_inc.png
     name: Team Extension North America Inc
+  - url: 'https://freebets.us'
+    img: free_bets_us.png
+    name: Free Bets US
 bronze_sponsors:
   - url: 'https://www.accelebrate.com/'
     img: accelebrate.png
@@ -129,3 +135,6 @@ bronze_sponsors:
   - url: 'https://www.webucator.com'
     img: webucator.png
     name: Webucator
+  - url: 'https://memberful.com/'
+    img: memberful.png
+    name: Memberful