The ngrok Kubernetes Operator is being used with GitHub Actions to automate testing, and this setup allows for a version-controlled workflow that can be easily iterated upon. The workflow file defines the steps required to deploy a Kubernetes cluster, install Helm, and run tests using Go scripts. The Go script takes in a plan file, parses it, and uses the parsed values to deploy a Helm chart based on those values. This setup allows for testing of different Helm charts and test plans, and can be used with various Kubernetes APIs such as Gateway API, Ingress, or regular CRDs. The repository is self-contained and provides instructions on how to set up and run the workflow, including setting environment variables and deciphering GitHub Action logs.