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/credentials/credentials.service.ee.ts

@@ -40,7 +40,7 @@ export class EECredentialsService extends CredentialsService {
 		// Omit user from where if the requesting user has relevant
 		// global credential permissions. This allows the user to
 		// access credentials they don't own.
-		if (!options.allowGlobalScope || !(await user.hasGlobalScope(options.globalScope))) {
+		if (!options.allowGlobalScope || !user.hasGlobalScope(options.globalScope)) {
 			where.userId = user.id;
 		}