A goldens-prerelease presubmit check was recently added in #1931. We should make the goldens-prerelease presubmit check optional. The purpose of the check is to run tests against pre-release versions of dependencies. As a breaking change was released last week in a protobuf pre-release, the check is currently failing. As this check runs against pre-release versions of dependencies, we should expect more failures moving forward. For the specific failure in #1935, it will take some time to add support for protobuf 5.x (See the work in progress PR #1936 which is blocked on googleapis/proto-plus-python#425 and googleapis/proto-plus-python#431).

We don't want to block development on this issue since we currently have a constraint to restrict new major versions of protobuf in generated clients. For example, see

Solving the issue of the failing presubmit is being prioritized as P1 but it should not block other P1 work.