gatewayAPI update to 1.6.1-bb.0

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/gateway-api/-/blob/1.6.1-bb.0/CHANGELOG.md

Package MR

big-bang/product/packages/gateway-api!40 (merged)

For Issue

Closes big-bang/product/packages/gateway-api#35 (closed) big-bang/product/packages/gateway-api#26

Upgrade Notices

The unstableAPI value has been removed; the chart now always installs the Gateway API standard channel CRDs.

If you were setting unstableAPI.enabled=true, upgrading removes the experimental-only CRDs along with any existing resources of those kinds.