Release of v15.0.4

[frouioui]

This release is scheduled for Friday 28 July 2023.

Pre-Release

• Notify the community on Slack.
• Make sure the release notes summary is prepared and clean
  • Prepare release note v15.0.4 #13619
• Make sure everyone in the release team meet the pre-requisites for the release
• Make sure all backports are complete
  • https://github.com/vitessio/vitess/milestone/29
  • [release-15.0] ignore all error for views in engine reload (#13590) #13592
  • [release-15.0] fix: error.as method usage to send pointer to the reference type expected (#13496) #13608
  • check keyspace snapshot time if none specified for backup restores #13557 (still on main)
  • [release-15.0] Optimize release notes generation to use GitHub Milestones (#13398) #13620
• Do the code freeze and pre release following the instructions.
  • Code freeze of release-15.0 for release of v15.0.4 #13649

Release

• Follow the release instructions for release: here
• Continue with the Java release following these instructions.
• Merge the 15.0.4 release notes on main.
• Make sure arewefastyet benchmarks the new release (https://benchmark.vitess.io/status)
• Release the operator, v2.8.5.

Post-Release

• Notify the community on Slack.
• Benchmarking results
• Tweet both vitess release and operator release

[GuptaManan100]

This has been released.