changelog: add 3.4 and 3.5 note about go 1.21.10

[lavishpal]

Updates 3.4 and 3.5 CHANGELOGs to add a line that the binaries are compiled with go version 1.21.10
Related to #17964

Please read https://github.com/etcd-io/etcd/blob/main/CONTRIBUTING.md#contribution-flow.

[k8s-ci-robot]

Hi @lavishpal. Thanks for your PR.

I'm waiting for a etcd-io member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[ivanvc]

/ok-to-test

[ivanvc]

Thanks, @lavishpal. Question for @jmhbnz or @ahrtr: do we want to specify that we bumped Go to address CVE-2024-24787? I can't find any previous references to Go version bumps that mentioned CVEs.

[ahrtr]

do we want to specify that we bumped Go to address CVE-2024-24787?

I think it's nice to have.

[ivanvc]

/retest

[ivanvc]

If it's nice to have, then this should be good enough to merge. Thanks, @lavishpal.