v0.78.0 - 2023-04-24

Maintenance 🔧

• Updating Windows references for April 2023 (#5093)
• Update Linux VHDs to 2023.04.11 (#5089)
• Updating Windows VHD base image to include April 2023 security updates (#5088)

Please report any issues here: https://github.com/Azure/aks-engine/issues/new