update dependencies

server/auth/github/github.go

vendor/cloud.google.com/go/compute/metadata/metadata.go

vendor/cloud.google.com/go/iam/iam.go

vendor/cloud.google.com/go/internal/cloud.go

vendor/cloud.google.com/go/internal/retry.go

...or/cloud.google.com/go/internal/version/update_version.sh

vendor/cloud.google.com/go/internal/version/version.go

vendor/cloud.google.com/go/storage/acl.go

vendor/cloud.google.com/go/storage/bucket.go

vendor/cloud.google.com/go/storage/copy.go

vendor/cloud.google.com/go/storage/doc.go

vendor/cloud.google.com/go/storage/iam.go

vendor/cloud.google.com/go/storage/reader.go

vendor/cloud.google.com/go/storage/storage.go

vendor/cloud.google.com/go/storage/writer.go

vendor/github.com/aws/aws-sdk-go/aws/config.go

vendor/github.com/aws/aws-sdk-go/aws/context.go

vendor/github.com/aws/aws-sdk-go/aws/context_1_6.go

vendor/github.com/aws/aws-sdk-go/aws/context_1_7.go

...or/github.com/aws/aws-sdk-go/aws/corehandlers/handlers.go