[x] All commits are relevant to the purpose of the PR (e.g. no TODO comments, unrelated rewording/restructuring, or arbitrary changes)
Small amounts of additional changes are usually okay, but if it makes it hard to concentrate on the relevant changes, ask for the unrelated changes to be reverted, and submitted as a separate PR.
Description
Adds details regarding https://github.com/silverstripe/silverstripe-framework/pull/11299 to the 5.3 changelog.
Issues
Pull request checklist