New Governance Metric - OSC Governance/Security TWG

[Ranchhand87]

trafficstars

Per the Security TWG: Please update/add Security.md

Please refer to: https://github.com/IntersectMBO/Open-Source-Office/blob/main/SECURITY.md

The initial deadline for these changes to be made is 30 September 2024. Thank you.

Ref: Issue #482