Description

This PR adds 2.14.x to the list of supported versions.

Related implementation PR:

• [20644] Update roadmap and release support Fast-DDS#4579

Contributor Checklist

• Commit messages follow the project guidelines.
• N/A: Code snippets related to the added documentation have been provided.
• Documentation tests pass locally.
• N/A: Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
• The title and description correctly express the PR's purpose.
• Check contributor checklist is correct.
• CI passes without warnings or errors.