fix: Set '@typescript-eslint/return-await' rule to 'always' for node code (no-changelog) (#8363)

Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>

packages/nodes-base/nodes/Mailchimp/GenericFunctions.ts

@@ -23,7 +23,7 @@ async function getMetadata(
 		url: credentials.metadataUrl as string,
 		json: true,
 	};
-	return this.helpers.request(options);
+	return await this.helpers.request(options);
 }
 
 export async function mailchimpApiRequest(