feat: 🎸 add missing array fields to auth method attributes

addons/api/addon/models/auth-method.js

@@ -7,7 +7,7 @@ import { equal } from '@ember/object/computed';
  */
 export const options = {
   oidc: {
-    signing_algorithm: [
+    signing_algorithms: [
       'RS256',
       'RS384',
       'RS512',