ci: Remove unnecessary async/await, enable await-thenable linting rule (no-changelog) (#8076)

## Summary
We accidentally made some functions `async` in
https://github.com/n8n-io/n8n/pull/7846
This PR reverts that change. 

## Review / Merge checklist
- [x] PR title and summary are descriptive.

packages/cli/src/commands/start.ts

@@ -1,4 +1,3 @@
-/* eslint-disable @typescript-eslint/await-thenable */
 /* eslint-disable @typescript-eslint/no-unsafe-call */
 /* eslint-disable @typescript-eslint/no-unsafe-member-access */
 import { Container } from 'typedi';
@@ -316,7 +315,6 @@ export class Start extends BaseCommand {
 
 			const port = config.getEnv('port');
 
-			// @ts-ignore
 			const webhookTunnel = await localtunnel(port, tunnelSettings);
 
 			process.env.WEBHOOK_URL = `${webhookTunnel.url}/`;