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

…#1317)

* 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>
(cherry picked from commit 4c906d5)

# Conflicts:
#	x/wasm/types/tx.go

* fix conflicts

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Co-authored-by: vishal-kanna <71565171+vishal-kanna@users.noreply.github.com>
Co-authored-by: Pino' Surace <pino.surace@live.it>

x/wasm/types/tx.go

@@ -261,7 +261,7 @@ func (msg MsgUpdateAdmin) ValidateBasic() error {
 		return sdkerrors.Wrap(err, "new admin")
 	}
 	if strings.EqualFold(msg.Sender, msg.NewAdmin) {
-		return sdkerrors.Wrap(ErrInvalidMsg, "new admin is the same as the old")
+		return sdkerrors.Wrap(ErrInvalid, "new admin is the same as the old")
 	}
 	return nil
 }