Updated vault-k8s to 0.16.1 and enable mTLS STRICT

Package Merge Request

Package Changes

https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/vault/-/blob/0.20.1-bb.0/CHANGELOG.md

Package MR

https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/vault/-/merge_requests/50
https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/vault/-/merge_requests/49

For Issue

Closes https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/vault/-/issues/22
Closes https://repo1.dso.mil/platform-one/big-bang/bigbang/-/issues/1184