Restore omitted documentation
When the top-level README.md was standardized this important information about operational deployments was missed when moving to the /docs/overview.md.
UNCLASSIFIED - NO CUI
Currently supported Big Bang Version is 2.42.0
ATTENTION: Immediate action is required to maintain compatibility with P1 services. Please visit https://p1notifications.dso.mil and see the "DSO.MIL Certificates Renewal" announcement under the "Notifications" section for more details.
When the top-level README.md was standardized this important information about operational deployments was missed when moving to the /docs/overview.md.
UNCLASSIFIED - NO CUI