Update "Release Roadmap" section at the support page

[CarmenDelgadoEclipse]

Is your feature request related to a problem? Please describe.
Hello community, the support page at https://adoptium.net/support/ is outdated. It shows the Java 21 LTS as Expected, and maybe is time to assess 24 releases?

Describe the solution you'd like

• Update Java 21 LTS status
• Add the news feature release based on the source list: https://www.java.com/releases/

Thanks!

[tellison]

The existing releases date update is part of the "Update support page" task in the release checklist, which is shown as done. Maybe should be part of the retrospective about how it was missed?