adding linter GHA #3

	name: Lint and Test Charts

	on:
	pull_request:
	types: [ opened, reopened, synchronize, ready_for_review ]
	branches:
	- main
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref_name }}
	cancel-in-progress: true

	jobs:
	lint-test:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
	with:
	fetch-depth: 0

	- name: Set up Helm
	uses: azure/setup-helm@5119fcb9089d432beecbf79bb2c7915207344b78 # v3.5
	with:
	version: v3.13.0

	# Python is required because `ct lint` runs Yamale (https://github.com/23andMe/Yamale) and
	# yamllint (https://github.com/adrienverge/yamllint) which require Python
	- name: Set up Python
	uses: actions/setup-python@65d7f2d534ac1bc67fcd62888c5f4f3d2cb2b236 # v4.7.1
	with:
	python-version: 3.x

	- name: Set up chart-testing
	uses: helm/[email protected]

	- name: Run chart-testing (list-changed)
	id: list-changed
	run: \|
	changed=$(ct list-changed --target-branch ${{ github.event.repository.default_branch }} --helm-extra-args '--timeout 500s')
	if [[ -n "$changed" ]]; then
	echo "changed=true" >> $GITHUB_OUTPUT
	fi

	- name: Run chart-testing (lint)
	run: ct lint --check-version-increment=false --target-branch ${{ github.event.repository.default_branch }} --helm-extra-args '--timeout 500s'

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