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/SendGrid/SendGrid.node.ts

@@ -1,6 +1,7 @@
 import type {
 	IDataObject,
 	IExecuteFunctions,
+	IHttpRequestMethods,
 	ILoadOptionsFunctions,
 	INodeExecutionData,
 	INodePropertyOptions,
@@ -146,7 +147,7 @@ export class SendGrid implements INodeType {
 						const returnAll = this.getNodeParameter('returnAll', i);
 						const filters = this.getNodeParameter('filters', i);
 						let endpoint = '/marketing/contacts';
-						let method = 'GET';
+						let method: IHttpRequestMethods = 'GET';
 						const body: IDataObject = {};
 						if (filters.query && filters.query !== '') {
 							endpoint = '/marketing/contacts/search';
@@ -186,7 +187,7 @@ export class SendGrid implements INodeType {
 			if (operation === 'get') {
 				const by = this.getNodeParameter('by', 0) as string;
 				let endpoint;
-				let method;
+				let method: IHttpRequestMethods;
 				const body: IDataObject = {};
 				for (let i = 0; i < length; i++) {
 					try {