feat: Add HTTP proxy for supported LLM nodes (#15449)

packages/@n8n/nodes-langchain/nodes/llms/LmChatGroq/LmChatGroq.node.ts

@@ -8,6 +8,7 @@ import {
 	type SupplyData,
 } from 'n8n-workflow';
 
+import { getHttpProxyAgent } from '@utils/httpProxyAgent';
 import { getConnectionHintNoticeField } from '@utils/sharedFields';
 
 import { makeN8nLlmFailedAttemptHandler } from '../n8nLlmFailedAttemptHandler';
@@ -146,6 +147,7 @@ export class LmChatGroq implements INodeType {
 			maxTokens: options.maxTokensToSample,
 			temperature: options.temperature,
 			callbacks: [new N8nLlmTracing(this)],
+			httpAgent: getHttpProxyAgent(),
 			onFailedAttempt: makeN8nLlmFailedAttemptHandler(this),
 		});