Bump porter to v0.29.1

* Support SuppressOutput
* Support SuffixArguments
* Support BuildableAction interface

Signed-off-by: Carolyn Van Slyck <[email protected]>

Author: carolynvs

go.mod

@@ -3,11 +3,11 @@ module get.porter.sh/mixin/skeletor
 go 1.13
 
 require (
-	get.porter.sh/porter v0.22.1-beta.1
+	get.porter.sh/porter v0.29.1
 	github.com/ghodss/yaml v1.0.0
-	github.com/gobuffalo/packr/v2 v2.7.1
-	github.com/spf13/cobra v0.0.5
-	github.com/stretchr/testify v1.4.0
+	github.com/gobuffalo/packr/v2 v2.8.0
+	github.com/spf13/cobra v0.0.6
+	github.com/stretchr/testify v1.5.1
 	github.com/xeipuuv/gojsonschema v1.2.0
 	gopkg.in/yaml.v2 v2.2.4
 )