⬆️ Update docker/setup-buildx-action action to v2.9.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
docker/setup-buildx-action	action	minor	v2.8.0 -> v2.9.0

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Release Notes

docker/setup-buildx-action (docker/setup-buildx-action)

### [`v2.9.0`](https://togithub.com/docker/setup-buildx-action/releases/tag/v2.9.0) [Compare Source](https://togithub.com/docker/setup-buildx-action/compare/v2.8.0...v2.9.0) - Bump [@​docker/actions-toolkit](https://togithub.com/docker/actions-toolkit) from 0.6.0 to 0.7.0 in [https://github.com/docker/setup-buildx-action/pull/246](https://togithub.com/docker/setup-buildx-action/pull/246) - Adds support to cache Buildx binary to hosted tool cache and GHA cache backend **Full Changelog**: https://github.com/docker/setup-buildx-action/compare/v2.8.0...v2.9.0

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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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