sponsorship: update sponsors 🙏 (#276)

Author: jemgillam

src/pages/sponsor.mdx

@@ -144,9 +144,11 @@ YOU!**
   <Sponsor name="qoby" />
   <Sponsor name="Paul Melnikow" />
   <Sponsor name="Stéphane Klein" />
+  <Sponsor name="Kadi Kraman" />
   <Sponsor name="Dani Kenan" />
   <Sponsor name="Vinzenz Weber" />
   <Sponsor name="Jimmy Liu" />
+  <Sponsor name="OnThisSpot" />
   <Sponsor name="Splitgraph" business />
   <Sponsor name="Zippr.io" business />
 </Sponsors>