Update helm module version to v3.2.1 (chartmuseum#70)

* update helm module version

* tidy go modules

go.mod

@@ -1,26 +1,11 @@
 module github.com/chartmuseum/helm-push
 
-go 1.13
+go 1.14
 
 require (
-	github.com/MakeNowJust/heredoc v0.0.0-20171113091838-e9091a26100e // indirect
 	github.com/Masterminds/semver v1.5.0 // indirect
-	github.com/docker/spdystream v0.0.0-20181023171402-6480d4af844c // indirect
-	github.com/emicklei/go-restful v2.11.1+incompatible // indirect
 	github.com/ghodss/yaml v1.0.0
-	github.com/go-openapi/spec v0.19.4 // indirect
-	github.com/golang/groupcache v0.0.0-20191027212112-611e8accdfc9 // indirect
-	github.com/googleapis/gnostic v0.3.1 // indirect
-	github.com/gregjones/httpcache v0.0.0-20181110185634-c63ab54fda8f // indirect
-	github.com/hashicorp/golang-lru v0.5.3 // indirect
-	github.com/imdario/mergo v0.3.8 // indirect
-	github.com/spf13/cobra v0.0.5
-	golang.org/x/net v0.0.0-20191028085509-fe3aa8a45271 // indirect
-	golang.org/x/sys v0.0.0-20191028164358-195ce5e7f934 // indirect
-	golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
-	google.golang.org/appengine v1.6.5 // indirect
-	helm.sh/helm/v3 v3.1.2
-	k8s.io/helm v2.16.1+incompatible
+	github.com/spf13/cobra v1.0.0
+	helm.sh/helm/v3 v3.2.1
+	k8s.io/helm v2.16.7+incompatible
 )
-
-replace github.com/docker/docker => github.com/docker/docker v0.0.0-20190731150326-928381b2215c