fix(deps): update dependency @polkadot/extension-dapp to ^0.47.3

Author: renovate[bot]

package.json

@@ -23,7 +23,7 @@
     "@astrojs/node": "^6.1.0",
     "@astrojs/react": "^3.1.1",
     "@kiltprotocol/sdk-js": "^0.35.0",
-    "@polkadot/extension-dapp": "^0.46.5",
+    "@polkadot/extension-dapp": "^0.47.3",
     "@polkadot/util": "^12.6.2",
     "astro": "^3.6.5",
     "got": "^12.6.1",