Add localization for 'API' in triggerer column

app/assets/javascripts/pipelines/components/pipeline_triggerer.vue

@@ -28,6 +28,8 @@ export default {
       :tooltip-text="user.name"
       class="prepend-left-default js-pipeline-url-user"
     />
-    <span v-else class="prepend-left-default js-pipeline-url-api api"> API </span>
+    <span v-else class="prepend-left-default js-pipeline-url-api api">
+      {{ s__('Pipelines|API') }}
+    </span>
   </div>
 </template>

locale/gitlab.pot

@@ -6574,6 +6574,9 @@ msgstr ""
 msgid "Pipelines settings for '%{project_name}' were successfully updated."
 msgstr ""
 
+msgid "Pipelines|API"
+msgstr ""
+
 msgid "Pipelines|Build with confidence"
 msgstr ""