Action to annul an arbitration award. Inadmissibility of granting a stay of execution to an appeal. A lawsuit between the issuer and guarantors of a negotiable instrument and the custodian bank concerning a contract in which the creditor did not participate does not constitute external prejudicial dependency in relation to arbitration proceedings in which the creditor had its credit recognized based on another contract, containing an arbitration clause, which was the subject of the arbitration award: