refactor: Add IRequestOptions type to helpers.request for more type safety (no-changelog) (#8563)

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

packages/nodes-base/nodes/Harvest/Harvest.node.ts

@@ -6,6 +6,7 @@ import type {
 	INodePropertyOptions,
 	INodeType,
 	INodeTypeDescription,
+	IHttpRequestMethods,
 } from 'n8n-workflow';
 import { NodeOperationError } from 'n8n-workflow';
 
@@ -208,7 +209,7 @@ export class Harvest implements INodeType {
 		const operation = this.getNodeParameter('operation', 0);
 
 		let endpoint = '';
-		let requestMethod = '';
+		let requestMethod: IHttpRequestMethods;
 		let body: IDataObject | Buffer;
 		let qs: IDataObject;