vault update to 0.28.1-bb.8

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/vault/-/blob/0.28.1-bb.8/CHANGELOG.md

Package MR

big-bang/product/packages/vault!203 (merged)

For Issue

Closes big-bang/product/packages/vault#115 (closed)

Upgrade Notices

N/A