Adicionar Imagem na seta do OWL

.owl-next {
    background: url(../img/seta.png) no-repeat center !important;
    color: transparent !important;
    height: 75px;
    opacity: 0.9 !important;
}

OU ADICIONAR NO PROPRIO JS

jQuery(".equipe-owl").owlCarousel({
    items: 1,
    margin: 10,
    loop: true,
    dots: true,
    nav: true,
    navText: [
      '<i class="fas fa-angle-left"></i>',
      '<i class="fas fa-angle-right"></i>'
    ]
  });