chore: update sponsors (vuejs#2148)

Author: vue-bot

themes/vue/_config.yml

@@ -107,6 +107,9 @@ gold_sponsors:
   - url: 'https://www.simplyswitch.com/'
     img: energy_comparison.png
     name: Energy Comparison
+  - url: 'https://www.bacancytechnology.com'
+    img: bacancy_technology.png
+    name: Bacancy Technology
   - url: 'https://blokt.com/'
     img: blokt_cryptocurrency_news.png
     name: Blokt Cryptocurrency News