🐛 Update fetch method downstream (#27)

prebuild.js failed during build with UND_ERR_ABORTED when downloading
from Red Hat CDN in corporate environments with HTTP/2 restrictions.

Root Cause
Used 15-year-old https.get() API which poorly handles:

- HTTP/2 protocol negotiation
- Corporate proxies
- Modern network environments

konveyor#1030

Author: ibolton336

scripts/prebuild.js

@@ -2,7 +2,6 @@
 
 import fs from "fs";
 import path from "path";
-import https from "https";
 import { fileURLToPath } from "url";
 
 const __filename = fileURLToPath(import.meta.url);
@@ -45,21 +44,11 @@ const PLATFORM_BINARY_NAMES = {
 };
 
 async function fetchText(url) {
-  return new Promise((resolve, reject) => {
-    https
-      .get(url, (res) => {
-        let data = "";
-        res.on("data", (chunk) => (data += chunk));
-        res.on("end", () => {
-          if (res.statusCode === 200) {
-            resolve(data);
-          } else {
-            reject(new Error(`HTTP ${res.statusCode}: ${res.statusMessage}`));
-          }
-        });
-      })
-      .on("error", reject);
-  });
+  const response = await fetch(url);
+  if (!response.ok) {
+    throw new Error(`HTTP ${response.status}: ${response.statusText}`);
+  }
+  return await response.text();
 }
 
 try {