gatekeeper update to 3.18.2-bb.1

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/policy/-/blob/3.18.2-bb.1/CHANGELOG.md

Package MR

big-bang/product/packages/policy!307 (merged)

For Issue

Closes big-bang/product/packages/policy#277 (closed)

Upgrade Notices

N/A