chore(deps): update docker/setup-buildx-action digest to 6524bf6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
docker/setup-buildx-action	action	digest	c47758b -> 6524bf6

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Configuration

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🚦 Automerge: Enabled.

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

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

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[coveralls]

coverage: 65.247%. remained the same
when pulling bbb9713 on renovate/all-patch-and-minor
into 1158b83 on main.