Mainnet - v4.0.3-harmonic

This is a mainnet release.

This release includes updates to both the agave-validator and the harmonic-scheduler.
It is recommended that you upgrade both with this release.

What's Changed

Harmonic Validator (agave-validator)

• Upstream Changes: https://github.com/anza-xyz/agave/releases/tag/v4.0.3

Harmonic Scheduler (harmonic-scheduler)

• More accurate reporting of leader window start time to the block engine