fix(server): node-fetchおよびgotを使う以前の実装に戻す

see #9710

packages/backend/src/server/api/endpoints/fetch-rss.ts

@@ -33,16 +33,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private httpRequestService: HttpRequestService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const res = await this.httpRequestService.fetch(
-				ps.url,
-				{
-					method: 'GET',
-					headers: {
-						Accept: 'application/rss+xml, */*',
-					},
-					// timeout: 5000,
-				}
-			);
+			const res = await this.httpRequestService.send(ps.url, {
+				method: 'GET',
+				headers: {
+					Accept: 'application/rss+xml, */*',
+				},
+				timeout: 5000,
+			});
 
 			const text = await res.text();