Update acks page

[sei-renae]

This pull request updates the acknowledgements section in the docs/about/acknowledgements.md file to provide a more comprehensive history of SSVC and recognize a broader set of contributors. The changes clarify the evolution of SSVC, list previous authors and key papers, and expand the list of individuals and organizations thanked for their input.

Expanded SSVC history and authorship:

• Updated the introduction to acknowledge a wider set of previous SSVC authors, including Eric Hatleback, Bon Jin Koo, and Jonathan Spring, in addition to those previously listed.
• Added a detailed list of foundational SSVC papers with full citations and links, documenting the evolution of SSVC from its inception.

Broader recognition of contributors and reviewers:

• Expanded the list of individuals thanked for helpful comments on earlier versions, adding several new names and clarifying the alphabetical listing.
• Included additional organizations and groups (e.g., OASIS CSAF TC) in the acknowledgements for their feedback and participation.
• Updated language to reflect the SSVC team's collective gratitude and clarified references to contributors, feedback, and anonymous reviewers.

[Copilot]

Pull Request Overview

This pull request significantly expands the acknowledgements documentation by providing a comprehensive history of SSVC development and recognizing a broader set of contributors. The changes transform a simple acknowledgement into a detailed historical record.

• Updated from "authors" to "SSVC team" and expanded the list of previous authors from 3 to 6 people
• Added five detailed citations documenting SSVC's evolution from 2018 to 2023
• Expanded individual acknowledgements from 5 to 11 people and added the OASIS CSAF TC organization