screener-storybook is broken on storybook v7

[igoldny]

After updating storybook to v7 (v7.1.1) screener-storybook got broken with the following error:

17:15:44  DEBUG: GET http://localhost:2000 null 200
17:15:44  DEBUG: previewRoute /iframe.html
17:15:46  DEBUG: GET http://localhost:2000/iframe.html
17:16:18  TimeoutError: Waiting failed: 30000ms exceeded
17:16:18      at Timeout.<anonymous> (/mnt/data/builds/12/node_modules/puppeteer-core/lib/cjs/puppeteer/common/WaitTask.js:64:32)
17:16:18      at listOnTimeout (node:internal/timers:569:17)
17:16:18      at process.processTimers (node:internal/timers:512:7)
17:16:18  DEBUG: config.storybookPort 2000
17:16:18  Error getting Storybook object
17:16:18  Please send debug output to help@saucelabs.com
17:16:18  DEBUG: Error: Storybook object not found
17:16:18      at exports.get [as getStorybook] (/mnt/data/builds/12/node_modules/screener-storybook/src/storybook.js:300:11)
17:16:18      at /mnt/data/builds/12/node_modules/screener-storybook/src/cli.js:50:35
17:16:18      at tryCatcher (/mnt/data/builds/12/node_modules/bluebird/js/release/util.js:16:23)
17:16:18      at Promise._settlePromiseFromHandler (/mnt/data/builds/12/node_modules/bluebird/js/release/promise.js:547:31)
17:16:18      at Promise._settlePromise (/mnt/data/builds/12/node_modules/bluebird/js/release/promise.js:604:18)
17:16:18      at Promise._settlePromise0 (/mnt/data/builds/12/node_modules/bluebird/js/release/promise.js:649:10)
17:16:18      at Promise._settlePromises (/mnt/data/builds/12/node_modules/bluebird/js/release/promise.js:729:18)
17:16:18      at Promise._fulfill (/mnt/data/builds/12/node_modules/bluebird/js/release/promise.js:673:18)
17:16:18      at /mnt/data/builds/12/node_modules/bluebird/js/release/nodeback.js:42:21
17:16:18      at done (/mnt/data/builds/12/node_modules/screener-storybook/src/storybook.js:93:11)
17:16:18  ---
17:16:18  Exiting Screener Storybook
17:16:18  Run with --debug flag to log additional information
17:16:18  Need help? Contact: help@saucelabs.com
17:16:18  error Command failed with exit code 1.
17:16:18  info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

I thought it's already been handled here - #147
Can you verify please?

CC: @sauce-tartar