Don't use undici's globalDispatcher

Author: alcuadrado

packages/hardhat-core/src/internal/util/download.ts

@@ -24,13 +24,13 @@ export async function download(
   timeoutMillis = 10000,
   extraHeaders: { [name: string]: string } = {}
 ) {
-  const { getGlobalDispatcher, ProxyAgent, request } = await import("undici");
+  const { Agent, ProxyAgent, request } = await import("undici");
 
   let dispatcher: Dispatcher;
   if (process.env.http_proxy !== undefined && shouldUseProxy(url)) {
     dispatcher = new ProxyAgent(process.env.http_proxy);
   } else {
-    dispatcher = getGlobalDispatcher();
+    dispatcher = new Agent();
   }
 
   const hardhatVersion = getHardhatVersion();

packages/hardhat-verify/src/internal/undici.ts

@@ -29,13 +29,12 @@ export async function sendPostRequest(
 }
 
 function getDispatcher(): Undici.Dispatcher {
-  const { ProxyAgent, getGlobalDispatcher } =
-    require("undici") as typeof Undici;
+  const { ProxyAgent, Agent } = require("undici") as typeof Undici;
   if (process.env.http_proxy !== undefined) {
     return new ProxyAgent(process.env.http_proxy);
   }
 
-  return getGlobalDispatcher();
+  return new Agent();
 }
 
 export function isSuccessStatusCode(statusCode: number): boolean {