Use docs-bot token for styling

[jashapiro]

We have a couple of automated styling & docs actions implemented in https://github.com/AlexsLemonade/scpcaTools/blob/main/.github/workflows/pr-commands.yaml, but these use the default github token for authentication, which means that when they are run, they do not trigger any additional checks.

We should implement using the docs bot for git checkout and push in that workflow, which will then trigger downstream checks. To do this, we first need to give this repo access to the OP_DOCS_BOT_GITHUB_TOKEN secret, and then add a service account token that has access to that secret (presumably the scpca science team token).

This would be similar to:
https://github.com/AlexsLemonade/refinebio-examples/blob/61b5ae6fa35bdea95e966e6cdbf04ade8ada5605/.github/workflows/style-and-sp-check.yml#L23-L36