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.ee.ts

@@ -50,7 +50,7 @@ EECredentialsController.get(
 
 		const userSharing = credential.shared?.find((shared) => shared.user.id === req.user.id);
 
-		if (!userSharing && !(await req.user.hasGlobalScope('credential:read'))) {
+		if (!userSharing && !req.user.hasGlobalScope('credential:read')) {
 			throw new UnauthorizedError('Forbidden.');
 		}
 
@@ -130,7 +130,7 @@ EECredentialsController.put(
 		if (!ownsCredential || !credential) {
 			credential = undefined;
 			// Allow owners/admins to share
-			if (await req.user.hasGlobalScope('credential:share')) {
+			if (req.user.hasGlobalScope('credential:share')) {
 				const sharedRes = await EECredentials.getSharing(req.user, credentialId, {
 					allowGlobalScope: true,
 					globalScope: 'credential:share',