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/test/unit/repositories/sharedCredentials.repository.test.ts

@@ -24,20 +24,18 @@ describe('SharedCredentialsRepository', () => {
 		sharedCredential.credentials = mock<CredentialsEntity>({ id: credentialsId });
 		const owner = mock<User>({
 			isOwner: true,
-			hasGlobalScope: async (scope) => {
-				return hasScope(scope, {
+			hasGlobalScope: (scope) =>
+				hasScope(scope, {
 					global: ownerPermissions,
-				});
-			},
+				}),
 		});
 		const member = mock<User>({
 			isOwner: false,
 			id: 'test',
-			hasGlobalScope: async (scope) => {
-				return hasScope(scope, {
+			hasGlobalScope: (scope) =>
+				hasScope(scope, {
 					global: memberPermissions,
-				});
-			},
+				}),
 		});
 
 		beforeEach(() => {