Add missing responsible-role to by-component

[Gabeblis]

Committer Notes

Purpose

This PR aims to fix fedramp-ssp-example.oscal.xml. Test are failing because one by-component is missing a responsible role.

Changes

• Added a responsible-role to the by-component.

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  - [ ] If applicable, have all FedRAMP Documents Related to OSCAL Adoption affected by the changes in this issue have been updated.? Not applicable.
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