Add hfla-workflow-rollout[bot] to accepted PR authors

[t-will-gillis]

Fixes #8394

What changes did you make?

• Add hfla-workflow-rollout[bot] to list of accepted PR authors

Why did you make the changes (we will use this info to test)?

• The "PR verification" workflow is blocking the testing for Automate-The-ORG's auto PR

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Screenshots of Proposed Changes To The Website (if any, please do not include screenshots of code changes)

• No visual changes

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From your project repository, check out a new branch and test the changes.

git checkout -b t-will-gillis-add-bot-to-verify-prs-8394 gh-pages
git pull https://github.com/t-will-gillis/website.git add-bot-to-verify-prs-8394

[t-will-gillis]

Merging immediately to keep testing Automate-the-ORG workflow