[Backport 2.x] Bump software.amazon.awssdk from 2.20.86 to 2.30.31

[opensearch-trigger-bot]

Backport 09af518 from #17396.

[peterzhuamazon]

Close this for now as 2.19 is already free of netty bug and 2.20 is unlikely.

Thanks.

[github-actions]

❌ Gradle check result for 1a2e8d0: null

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[dbwiddis]

Close this for now as 2.19 is already free of netty bug and 2.20 is unlikely.

Thanks.

@peterzhuamazon Unfortunately since the version bump was in the 2.x section of the change log, this is causing failed backports for all future dependencies which need to be backported.

If we are making a decision to stop backporting (except for bugfix/security) we need to update the dependabot / CI to add to the correct section of the change log. Arbitrarily choosing not to update a dependency is creating a lot of manual effort and churn here.

[peterzhuamazon]

Got it @dbwiddis so if we re-open this and merge to 2.x, will that resolve the issue for now?

Thanks.

[peterzhuamazon]

Or is it better to move the changelog entry to unreleased on main instead?

Thanks.

[peterzhuamazon]

@dbwiddis I have a new backport here:
#17571

Thanks.

[dbwiddis]

Thanks. 🎉

When that's merged I'll re-trigger the backports for #17560 and #17562 (in that order)

[dbwiddis]

Or is it better to move the changelog entry to unreleased on main instead?

Honestly I think there's a lot of confusion. We have version bump PRs on 2.x branch for all the plugins for 2.22.0 which people don't seem in a hurry to merge: https://github.com/search?q=org%3Aopensearch-project+increment+2.20.0&type=pullrequests

Personally I'm in favor of keeping the existing routines unless and until it's clearly stated that we aren't doing 2.22.0 and we update all tooling to stop addressing 2.x branch other than intentional bugfix backports. Which I'm not sure we should really do until 3.0.0 is actually released.

Whatever we do we should be intentional about and consistent across the projec.t