chore(deps): update helm release rook-ceph to <1.15.7

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
rook-ceph	patch	<1.15.6 -> <1.15.7

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Release Notes

rook/rook (rook-ceph)

### [`v1.15.6`](https://redirect.github.com/rook/rook/compare/v1.15.5...v1.15.6) [Compare Source](https://redirect.github.com/rook/rook/compare/v1.15.5...v1.15.6)

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Configuration

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

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, 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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