Follow-up from "Replace Bootstrap Button & LoadingButton w/ GitLab UI GlButton in vulnerability_action_buttons.vue"

##229297 (closed) & #229217 (closed) replaced the Bootstrap buttons on vulnerability_action_buttons.vue (pipeline security tab quick actions associated with each finding) with the GlButton component.

The following feedback should be addressed:

We should really abstract these to a i18n object

Additional Context

This task is about moving the inline string definition into an object. As an example, the expected change is something like:

<script>
export default {
  i18n: { 
    myString: s__('mystring')
  }
}
</script>
<template>
  <gl-button
    aria-label:="i18n.myString"
</template>