feat: tag S3 client user agent for request attribution - #9795

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: hmarr/debug-action@v3.0.0, release-drafter/release-drafter@v6.4.0, thehanimo/pr-title-checker@v1.4.3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

"pull_request_target.edited" is not a known webhook name (https://developer.github.com/v3/activity/events/types/)

"pull_request_target.synchronize" is not a known webhook name (https://developer.github.com/v3/activity/events/types/)

"pull_request_target.reopened" is not a known webhook name (https://developer.github.com/v3/activity/events/types/)