feat(deps): update dependency github-username to v8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github-username	^7.0.0 -> ^8.0.0

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Release Notes

sindresorhus/github-username (github-username)

v8.0.0

Compare Source

Breaking

• Require Node.js 16 fd66ff3

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Configuration

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[reviewflow]

Progress

☑️ Step 1: ✏️ Write code
🔴 Step 2: 💚 Checks
⬜ Step 3: 👌 Code Review
🟡 Step 4: 🚦 Merge Pull Request

Options:

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• 🚦 skip-ci: Add [skip ci] on merge commit when merge is done with autoMerge.

Actions:

• 🐛 Force updating reviewflow checks for this PR. Use this to try to fix reviewflow checks that are still missing/pending, which might happen if webhook failed or something bad happened when reviewflow tried to send the status check to github.
• 🔄 update branch: Merge base branch in this PR's branch. Only works if merging is possible without conflicts.