fix(core): Set up OAuth2 cred test (#6960)

https://linear.app/n8n/issue/PAY-728

packages/cli/src/databases/migrations/common/1659888469333-AddJsonKeyPinData.ts

@@ -1,3 +1,4 @@
+import { isObjectLiteral } from '@/utils';
 import type { IDataObject, INodeExecutionData } from 'n8n-workflow';
 import type { MigrationContext, IrreversibleMigration } from '@db/types';
 
@@ -5,10 +6,6 @@ type OldPinnedData = { [nodeName: string]: IDataObject[] };
 type NewPinnedData = { [nodeName: string]: INodeExecutionData[] };
 type Workflow = { id: number; pinData: string | OldPinnedData };
 
-function isObjectLiteral(item: unknown): item is { [key: string]: string } {
-	return typeof item === 'object' && item !== null && !Array.isArray(item);
-}
-
 function isJsonKeyObject(item: unknown): item is {
 	json: unknown;
 	[keys: string]: unknown;