Update dependency @celo/rainbowkit-celo to v1.2.1

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

apps/example/package.json

@@ -9,7 +9,7 @@
     "lint": "next lint"
   },
   "dependencies": {
-    "@celo/rainbowkit-celo": "1.0.0",
+    "@celo/rainbowkit-celo": "1.2.1",
     "@mdx-js/loader": "^2.1.3",
     "@mdx-js/react": "^2.1.3",
     "@next/mdx": "^12.3.1",