chore(deps): update dependency renovate to v39.21.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
renovate (source)	39.20.6 -> 39.21.0

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Release Notes

renovatebot/renovate (renovate)

### [`v39.21.0`](https://redirect.github.com/renovatebot/renovate/releases/tag/39.21.0) [Compare Source](https://redirect.github.com/renovatebot/renovate/compare/39.20.6...39.21.0) ##### Features - **bundler:** add inline source support ([#​32600](https://redirect.github.com/renovatebot/renovate/issues/32600)) ([8e52625](https://redirect.github.com/renovatebot/renovate/commit/8e5262538c17ce28952ac6aec72fbc8fb82dbab9))

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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