Prepare for Release Fast DDS v2.12.0

[JLBuenoLopez]

Description

This PR:

• Updates Fast DDS roadmap, release and platform support.
• Updates CMakeLists requiring minimum versions: Fast DDS v2.12.0 and Fast CDR v2.0.0

Contributor Checklist

• Commit messages follow the project guidelines.
• [N/A] The code follows the style guidelines of this project.
• [N/A] Tests that thoroughly check the new feature have been added/Regression tests checking the bug and its fix have been added; the added tests pass locally
• [N/A] Any new/modified methods have been properly documented using Doxygen.
• [N/A] Changes are ABI compatible.
• [N/A] Changes are API compatible.
• New feature has been added to the versions.md file (if applicable).
• [N/A] New feature has been documented/Current behavior is correctly described in the documentation.
• [N/A] Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
• Check contributor checklist is correct.
• Check CI results: changes do not issue any warning.
• Check CI results: failing tests are unrelated with the changes.