Release of v19.0.3

[systay]

This release is scheduled for Thu 4 Apr 2024

Prerequisites for Release

• Notify the community on Slack.
• Make sure the release notes summary is prepared and clean.
• Make sure backport Pull Requests are merged, list below.
  • [release-19.0] Fix TPCH test by providing the correct field information in evalengine (#15623) #15655
  • VReplication: Get workflowFlavorVtctl endtoend testing working properly again #15636
  • discovery: Fix tablets removed from healthcheck when topo server GetTablet call fails #15633
  • Performance improvements for UNION #15497
• Make sure release blocker Issues are closed, list below.

Pre-Release

• Code Freeze.
  • [release-19.0] Code Freeze for v19.0.3 #15657
• Create Release PR.
  • [release-19.0] Release of v19.0.3 #15658
• Create new GitHub Milestone.
  • https://github.com/vitessio/vitess/milestone/59

Release

• Merge the Release PR.
  • [release-19.0] Release of v19.0.3 #15658
• Tag the release.
  • https://github.com/vitessio/vitess/releases/tag/v19.0.3
• Update release notes on main.
  • Copy v19.0.3 release notes on main #15661
• Go back to dev mode on the release branch.
  • [release-19.0] Bump to v19.0.4-SNAPSHOT after the v19.0.3 release #15662
• Update the website documentation.
• Make sure the release is benchmarked by arewefastyet.
• Docker Images available on DockerHub.
• Close current GitHub Milestone.
  • https://github.com/vitessio/vitess/milestone/57

Post-Release

• Notify the community on Slack for the new release.
• Twitter announcement.
• Close this Issue.