chore: 🤖 upgrade api addon to ember lts 3.20

addons/api/addon/models/account.js

@@ -16,7 +16,7 @@ export default class AccountModel extends GeneratedAccountModel {
    * Convenience for getting username in account.
    * @type {string}
    */
-  @computed('type', 'attributes.{login_name}')
+  @computed('type', 'attributes.login_name')
   get username() {
     let username = '';
     switch (this.type) {

addons/api/addon/models/base.js

@@ -1,7 +1,6 @@
 import Model from '@ember-data/model';
 import { fragment } from 'ember-data-model-fragments/attributes';
 import { computed } from '@ember/object';
-import { get } from '@ember/object';
 
 /**
  * Base model class provides common functionality for all models.
@@ -51,7 +50,7 @@ export default class BaseModel extends Model {
    */
   @computed('scope.scope_id')
   get scopeID() {
-    return get(this, 'scope.scope_id');
+    return this?.scope?.scope_id;
   }
   set scopeID(id) {
     if (!this.scope) this.scope = {};

addons/api/addon/models/group.js

@@ -23,7 +23,7 @@ export default class GroupModel extends GeneratedGroupModel {
    * @type {[UserModel]}
    */
   // TODO: Use fragments array to read cross scope members.
-  @computed('member_ids.[]')
+  @computed('member_ids.[]', 'store')
   get members() {
     return this.member_ids
       .map((id) => this.store.peekRecord('user', id))

addons/api/addon/models/target.js

@@ -26,7 +26,7 @@ export default class TargetModel extends GeneratedTargetModel {
    * instances).  Unresolvable instances are excluded from the array.
    * @type {[{model: HostSetModel, hostCatalog: HostCatalogModel}]}
    */
-  @computed('host_sets.[]')
+  @computed('host_sets.[]', 'store')
   get hostSets() {
     return this.host_sets
       .map(({ host_set_id, host_catalog_id }) => ({