Fixed undici in http module breaking on headers duplicated due casing.

src/scrapers/aylo.js

@@ -245,7 +245,6 @@ async function getSession(site, parameters, url) {
 		headers: {
 			'Accept-Language': 'en-US,en;', // somehow seems essential for some MG sites
 			Connection: 'keep-alive',
-			'User-Agent': 'HTTPie/3.2.1',
 		},
 		interval: parameters?.interval,
 		concurrency: parameters?.concurrency,

src/utils/http.js

@@ -438,8 +438,8 @@ async function scheduleRequest(method = 'get', url, body, requestOptions = {}) {
 		...defaultOptions,
 		...requestOptions,
 		headers: {
-			...(requestOptions.includeDefaultHeaders === false ? {} : defaultOptions.headers),
-			...requestOptions.headers,
+			...Object.fromEntries(requestOptions.includeDefaultHeaders === false ? {} : Object.entries(defaultOptions.headers).map(([key, value]) => [key.toLowerCase(), value])),
+			...Object.fromEntries(Object.entries(requestOptions.headers || {}).map(([key, value]) => [key.toLowerCase(), value])),
 		},
 		responseTimeout: requestOptions.responseTimeout || requestOptions.timeout || defaultOptions.timeout,
 		stream: !!requestOptions.destination,