update etcd to 3.5.15

[lhy1024]

It can be reviewed after #1709 merged

ref tikv/pd#3877

[CLAassistant]

All committers have signed the CLA.

[wuhuizuo]

will we request to upgrade the etcd server? I thinks the client version should keep same with the server version we recommend to deploy.

[wuhuizuo]

will we request to upgrade the etcd server? I thinks the client version should keep same with the server version we recommend to deploy.

And the PD also need to upgrade etcd if it does. and the ectdctl binary in release artifacts.

[lhy1024]

will we request to upgrade the etcd server? I thinks the client version should keep same with the server version we recommend to deploy.

Yes, I am trying for it tikv/pd#8441

[wuhuizuo]

/hold
it should merge to master after release-8.3 created.

[lhy1024]

/unhold
https://github.com/tikv/pd/tree/release-8.3 has been created cc @wuhuizuo
PTAL @baurine @mornyx

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-15 04:50:04.91312805 +0000 UTC m=+416289.616597692: ☑️ agreed by baurine.

[ti-chi-bot]

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