[PATCH] perf-tests: #!/bin/bash -> #!/usr/bin/env bash

[David Bremner]

William Casarin <jb55 at jb55.com> writes:

> I couldn't run the performance tests on my machines due to a hardcoded
> bash path. Use env for finding bash in weird systems like NixOS.
>
> Signed-off-by: William Casarin <jb55 at jb55.com>

pushed to master

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