Update to use github actions

[rimusz]

Signed-off-by: rimas rmocius@gmail.com

[Copilot]

Pull Request Overview

This PR migrates the CI/CD pipeline from Google Cloud Build and CircleCI to GitHub Actions for a Helm charts repository. The migration replaces existing build pipelines with GitHub Actions workflows for chart linting, testing, and releasing.

• Replaced Google Cloud Build pipeline with GitHub Actions chart-releaser workflow
• Migrated CircleCI configuration to GitHub Actions for linting and testing
• Added chart-releaser configuration for automated Helm chart releases

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
.pipeline/cloudbuild.yaml	Removed Google Cloud Build pipeline configuration
.github/workflows/release.yml	Added GitHub Actions workflow for releasing Helm charts
.github/workflows/lint-and-test.yml	Added GitHub Actions workflow for linting and testing charts
.github/cr.yaml	Added chart-releaser configuration
.circleci/config.yml	Removed CircleCI configuration

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