Update buildpacks sample to latest buildpacks syntax
-apiVersion: skaffold/v1
+apiVersion: skaffold/v2beta5
kind: Config
build:
artifacts:
- image: gcr.io/k8s-skaffold/skaffold-buildpacks
- buildpack:
+ buildpacks:
builder: "gcr.io/buildpacks/builder:v1"
