Update netlify client

.travis.yml

@@ -4,7 +4,7 @@ services:
 - docker
 language: go
 go:
-  - "1.11.x"
+  - "1.13.x"
 
 
 install:

go.mod

@@ -2,27 +2,13 @@ module github.com/terraform-providers/terraform-provider-netlify
 
 require (
 	contrib.go.opencensus.io/exporter/ocagent v0.5.0 // indirect
-	github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a // indirect
-	github.com/go-openapi/analysis v0.19.0 // indirect
-	github.com/go-openapi/jsonpointer v0.19.0 // indirect
-	github.com/go-openapi/jsonreference v0.19.0 // indirect
-	github.com/go-openapi/loads v0.19.0 // indirect
-	github.com/go-openapi/runtime v0.19.0
-	github.com/go-openapi/spec v0.19.0 // indirect
-	github.com/go-openapi/strfmt v0.19.0
-	github.com/grpc-ecosystem/grpc-gateway v1.9.0 // indirect
+	github.com/go-openapi/runtime v0.19.5
+	github.com/go-openapi/strfmt v0.19.3
 	github.com/hashicorp/go-cleanhttp v0.5.0
-	github.com/hashicorp/golang-lru v0.5.1 // indirect
 	github.com/hashicorp/terraform v0.12.1
 	github.com/hashicorp/yamux v0.0.0-20180826203732-cc6d2ea263b2 // indirect
-	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
-	github.com/mailru/easyjson v0.0.0-20190403194419-1ea4449da983 // indirect
 	github.com/mattn/go-isatty v0.0.7 // indirect
-	github.com/netlify/open-api v0.11.4
-	github.com/sirupsen/logrus v1.4.2 // indirect
-	golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f // indirect
-	golang.org/x/net v0.0.0-20190514140710-3ec191127204 // indirect
-	golang.org/x/sys v0.0.0-20190606203320-7fc4e5ec1444 // indirect
-	google.golang.org/api v0.5.0 // indirect
-	google.golang.org/genproto v0.0.0-20190515210553-995ef27e003f // indirect
+	github.com/netlify/open-api v0.12.0
 )
+
+go 1.13