Describe your Issue

As per title, Jackson 3.0 need not (and should not) keep JDK baseline as Java 8.
We should pick a support LTS version to use as the new base.

We have a choice to make; currently likeliest choices are:

• Java 17 (for maximal support for existing user base)
• Java 21 latest and greatest

We can decide on this via separate discussion; this issue is for tracking actual change.

EDIT: Discussion here: FasterXML/jackson-future-ideas#73