Upgrade gitaly library code to v1.57.0

gitaly_integration_test.go

gitaly_test.go

internal/api/api.go

internal/git/archive.go

internal/git/archive_test.go

internal/git/blob.go

internal/git/diff.go

internal/git/format-patch.go

internal/git/snapshot.go

internal/gitaly/blob.go

internal/gitaly/diff.go

internal/gitaly/gitaly.go

internal/gitaly/namespace.go

internal/gitaly/repository.go

internal/gitaly/smarthttp.go

internal/gitaly/unmarshal_test.go

internal/testhelper/gitaly.go

internal/testhelper/gitaly_dummies.go

main_test.go

vendor/gitlab.com/gitlab-org/gitaly-proto/LICENSE