#1 add dependencies to vendor

vendor/goa.design/goa/v3/expr/result_type.go

vendor/goa.design/goa/v3/expr/root.go

vendor/goa.design/goa/v3/expr/security.go

vendor/goa.design/goa/v3/expr/server.go

vendor/goa.design/goa/v3/expr/service.go

vendor/goa.design/goa/v3/expr/testing.go

vendor/goa.design/goa/v3/expr/types.go

vendor/goa.design/goa/v3/expr/user_type.go

vendor/goa.design/goa/v3/http/client.go

vendor/goa.design/goa/v3/http/doc.go

vendor/goa.design/goa/v3/http/encoding.go

vendor/goa.design/goa/v3/http/error.go

vendor/goa.design/goa/v3/http/mux.go

vendor/goa.design/goa/v3/http/server.go

vendor/goa.design/goa/v3/http/websocket.go

vendor/goa.design/goa/v3/pkg/doc.go

vendor/goa.design/goa/v3/pkg/endpoint.go

vendor/goa.design/goa/v3/pkg/error.go

vendor/goa.design/goa/v3/pkg/validation.go

vendor/goa.design/goa/v3/pkg/version.go