Update the tech stack to reflect Workato and Platypus ownership changes

Tech Stack Update

Please do not merge this MR before the Business Systems Analysts have reviewed and approved.

Please take into account:

• If changing provisioners: You must also open an Update Tech Stack provisioner issue so all templates and Tech Stack information can be updated.
• If completing a system offboarding:
  • Open an issue for Tech Stack offboarding

Security Risk (@gitlab-com/gl-security/security-assurance/security-risk-team)

Not required prior to merging

• Create Tech Stack Update Issue in StORM board and Link Here
• Once updates are finalized, reconcile changes with the ZenGRC System of Record

/cc @marc_disabatino @gitlab-com/gl-security/security-assurance/security-risk-team