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/databases/entities/User.ts

@@ -134,7 +134,7 @@ export class User extends WithTimestamps implements IUser {
 		return STATIC_SCOPE_MAP[this.globalRole?.name] ?? [];
 	}
 
-	async hasGlobalScope(scope: Scope | Scope[], scopeOptions?: ScopeOptions): Promise<boolean> {
+	hasGlobalScope(scope: Scope | Scope[], scopeOptions?: ScopeOptions): boolean {
 		return hasScope(
 			scope,
 			{

packages/cli/src/databases/repositories/sharedCredentials.repository.ts

@@ -15,7 +15,7 @@ export class SharedCredentialsRepository extends Repository<SharedCredentials> {
 			relations: ['credentials'],
 			where: {
 				credentialsId,
-				...(!(await user.hasGlobalScope('credential:read')) ? { userId: user.id } : {}),
+				...(!user.hasGlobalScope('credential:read') ? { userId: user.id } : {}),
 			},
 		});
 		if (!sharedCredential) return null;