Changed: Set brotli compression quality to 5

src/files.js

@@ -73,7 +73,11 @@ export async function fetchFileWithHeadersFromBaseUrl ({ path, baseUrl, version
       result.body = await gzip(result.body)
       result.headers['content-encoding'] = 'gzip'
     } else {
-      result.body = await brotliCompress(result.body)
+      result.body = await brotliCompress(result.body, {
+        params: {
+          [zlib.constants.BROTLI_PARAM_QUALITY]: 5
+        }
+      })
       result.headers['content-encoding'] = 'br'
     }
   }