message: Move POST requests of collection-submission-actions to top level endpoint
diff: import ActionAdapter from './action';
  export default class CollectionSubmissionActionAdapter extends ActionAdapter {
  + urlForCreateRecord() {
  + // Eventually remove this when we can just post to /v2/collection_submissions/:id/actions
  + return `${this.urlPrefix()}/collection_submission_actions/`;
  + }
  }
  declare module 'ember-data/types/registries/adapter' {
  