fix : removed the unnecessary usage of ErrInvalidMsg (#1311)

* feat:added a new error type

* feat:added a new error type

* fix: removed unnecessary usage of error type ErrInvalidMsg

---------

Co-authored-by: Vishal <kannavish329@gamil.com>

x/wasm/types/tx.go

@@ -262,7 +262,7 @@ func (msg MsgUpdateAdmin) ValidateBasic() error {
 		return errorsmod.Wrap(err, "new admin")
 	}
 	if strings.EqualFold(msg.Sender, msg.NewAdmin) {
-		return errorsmod.Wrap(ErrInvalidMsg, "new admin is the same as the old")
+		return errorsmod.Wrap(ErrInvalid, "new admin is the same as the old")
 	}
 	return nil
 }