benchmark: fix http/headers.js with test-double

The http/headers.js benchmark fails if wrk or autocannon are not installed. This is because the benchmark exceeds the default permissible length for HTTP headers. Reduce the largest benchmarks to fit within the 8192 default as that is what we should be optimizing for. Fixes: #31022 PR-URL: #36794 Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Juan José Arboleda <[email protected]> Reviewed-By: Anto Aravinth <[email protected]>

Author: Trott

benchmark/http/headers.js

@@ -4,7 +4,7 @@ const common = require('../common.js');
 consthttp=require('http');
 
 constbench=common.createBenchmark(main,{
-n: [10,1000],
+n: [10,600],
 len: [1,100],
 duration: 5
 });