gatekeeper update to 3.18.2-bb.0

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/policy/-/blob/3.18.2-bb.0/CHANGELOG.md

Package MR

big-bang/product/packages/policy!303 (merged)

For Issue

Closes big-bang/product/packages/policy#272 (closed)

Upgrade Notices

N/A