There are no changes with this release. See https://typo3.org/teams/security/security-bulletins/psa/typo3-psa-2017-001/
Full list of changes: https://github.com/FluidTYPO3/vhs/compare/4.3.0...4.3.1
Please note: the change list above does not contain any TASK commits since they are considered infrastructure-only and not relevant to end users. The full list includes these!