BAU: Remove redundant Lambda permission resources

[alhcomer]

What

API Gateway invokes lambdas via the :active alias, so only the AliasPermission is needed. The base FunctionPermission was unused.

Had to update the openapi spec to also reference the alias

How to review

1. Code Review

Checklist

• Deployment of this PR will not break active user journeys

• Impact on orch and auth mutual dependencies has been checked.

• No changes required or changes have been made to stub-orchestration.

• A UCD review has been performed.

• All commits contain one or more Co-authored-by lines where pairing or mobbing has taken place

Related PRs

[github-actions]

Java Tests Skipped

No Java files were changed in this pull request. Java tests will be skipped¹.

Any Java files that are changed in a subsequent commit will trigger the Java tests.

Footnotes

1. These tests will still show as passing in the PR status check, but will not actually have run. ↩