Merge PR #4561: Add account JSON tag to AccountWithHeight

.pending/breaking/sdk/4536-The-auth-accoun

@@ -0,0 +1,2 @@
+#4536 The `/auth/accounts/{address}` now returns a `height` in the response.
+The account is now nested under `account`.

x/auth/client/rest/query.go

@@ -17,8 +17,8 @@ import (
 // AccountWithHeight wraps the embedded Account with the height it was queried
 // at.
 type AccountWithHeight struct {
-	types.Account
-	Height int64 `json:"height"`
+	types.Account `json:"account"`
+	Height        int64 `json:"height"`
 }
 
 // query accountREST Handler