Playwright does not support chromium on mac11.4

## Description

Error when trying to run `jlpm`

```
benchmarks/packages/run/node_modules/playwright/lib/helper.js:325
throw new Error(message);
^

Error: ERROR: Playwright does not support chromium on mac11.4
```

## Reproduce

1. Quick start benchmarks as instructed
2. run `jlpm`

## Expected behavior

benchmarks should be started without Playwright issue

## Context

- Operating System and version: macOS Big Sur Version 11.4
- Browser and version: Google Chrome Version 92.0.4515.131 (Official Build) (arm64)
- JupyterLab version: 4.0.0a1

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