fix: Set '@typescript-eslint/return-await' rule to 'always' for node code (no-changelog) (#8363)

Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>

packages/cli/test/unit/Helpers.ts

@@ -5,7 +5,7 @@ import type { INodeTypeData } from 'n8n-workflow';
  * the macrotask queue and so called at the next iteration of the event loop
  * after all promises in the microtask queue have settled first.
  */
-export const flushPromises = async () => new Promise(setImmediate);
+export const flushPromises = async () => await new Promise(setImmediate);
 
 export function mockNodeTypesData(
 	nodeNames: string[],