cloud: add release notes 2024-10-29

[qiancai]

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[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2024-10-29 02:09:30.254131552 +0000 UTC m=+315683.093287098: :ballot_box_with_check: agreed by Oreoxmt.

[qiancai]

/approve

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiancai

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/pingcap/docs/blob/release-7.5/OWNERS)~~ [qiancai] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[qiancai]

/retest