Bump commercial to v19.8.0

[deedeeh]

What does this change?

This PR bumps Commercial to v

Checklist

• [x] Tested locally, and on CODE if necessary

[github-actions[bot]]

Deploy build 2167 of dotcom:frontend-all to CODE

All deployment options

- [Deploy build 2167 of `dotcom:frontend-all` to CODE](https://riffraff.gutools.co.uk/deployment/deployAgain?project=dotcom%3Afrontend-all&build=2167&stage=CODE&updateStrategy=MostlyHarmless&action=deploy) - [Deploy parts of build 2167 to CODE by previewing it first](https://riffraff.gutools.co.uk/preview/yaml?project=dotcom%3Afrontend-all&build=2167&stage=CODE&updateStrategy=MostlyHarmless) - [What's on CODE right now?](https://riffraff.gutools.co.uk/deployment/history?projectName=dotcom%3Afrontend-all&stage=CODE)

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From guardian/actions-riff-raff.