Release 8.9.0 with Spring Boot 3.4.2

[mshima]

Overview of the feature request

Release generator-jhipster based on Spring Boot v3.4.2

Motivation for or Use Case

Related issues or PR

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[mshima]

@mraible what's the plan for next release?

[mraible]

I can do one this week. Does it need to be a minor version bump or can it be a patch release? Spring Boot is a patch release, so I'm inclined to do 8.8.1 instead of 8.9.0.

[mshima]

I prefer to always release a minor version unless we have an emergency release.
This makes more sense to blueprints.
We could release a minor version each Spring Boot patch version and generator-jhipster major version each Spring Boot minor version.