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.controller.ts

@@ -163,7 +163,7 @@ credentialsController.patch(
 			);
 		}
 
-		if (sharing.role.name !== 'owner' && !(await req.user.hasGlobalScope('credential:update'))) {
+		if (sharing.role.name !== 'owner' && !req.user.hasGlobalScope('credential:update')) {
 			Container.get(Logger).info(
 				'Attempt to update credential blocked due to lack of permissions',
 				{
@@ -232,7 +232,7 @@ credentialsController.delete(
 			);
 		}
 
-		if (sharing.role.name !== 'owner' && !(await req.user.hasGlobalScope('credential:delete'))) {
+		if (sharing.role.name !== 'owner' && !req.user.hasGlobalScope('credential:delete')) {
 			Container.get(Logger).info(
 				'Attempt to delete credential blocked due to lack of permissions',
 				{