Add dependency array to "Identicon" side effect (#561)

src/components/Identicon/index.js

@@ -22,7 +22,7 @@ export default function Identicon() {
       ref.current.innerHTML = ''
       ref.current.appendChild(Jazzicon(16, parseInt(account.slice(2, 10), 16)))
     }
-  })
+  }, [account])
 
   return <StyledIdenticon ref={ref} />
 }