vue-select/docs/components/OpenIndicatorOverride.vue

<template>
  <div>
    <v-select
            :options="['Canada', 'United States']"
            :components="{OpenIndicator}"
    />
  </div>
</template>

<script>
export default {
  data: () => ({
    OpenIndicator: {
      render: createElement => createElement('span', '🔽'),
    },
  }),
};
</script>