This dependency update is the first step to supporting Azure Managed
Identities (https://gitlab.com/gitlab-org/gitlab/-/issues/242245) so
that static credentials are not needed. This is equivalent to Amazon's
IAM instance profile.

This GoCloud update also requires a newer gprc-go version. v1.34.1
fixes a UNIX socket dialing issue that was broken in v1.34.0:
https://github.com/grpc/grpc-go/issues/3990

Part of https://gitlab.com/gitlab-org/gitlab/-/issues/242245