Fix get-stream import statement (#2266)

source/core/index.ts

@@ -14,7 +14,7 @@ import CacheableRequest, {
 } from 'cacheable-request';
 import decompressResponse from 'decompress-response';
 import is from '@sindresorhus/is';
-import {buffer as getBuffer} from 'get-stream';
+import getStream from 'get-stream';
 import {FormDataEncoder, isFormData as isFormDataLike} from 'form-data-encoder';
 import type {ClientRequestWithTimings, Timings, IncomingMessageWithTimings} from '@szmarczak/http-timer';
 import type ResponseLike from 'responselike';
@@ -54,6 +54,8 @@ export type Progress = {
 	total?: number;
 };
 
+const {buffer: getBuffer} = getStream;
+
 const supportsBrotli = is.string(process.versions.brotli);
 
 const methodsWithoutBody: ReadonlySet<string> = new Set(['GET', 'HEAD']);