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chore(deps): update dependency chart-testing to v3.15.0 (main) #1335

	name: Lint Charts

	on:
	pull_request:
	branches:
	- main
	- release-[0-9]+.[0-9]+

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.number }}
	cancel-in-progress: true

	jobs:

	lint-chart:
	name: Lint Metadata
	runs-on: ubuntu-latest
	env:
	GO111MODULE: on

	steps:
	- name: Checkout
	uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
	with:
	fetch-depth: 0

	- name: Set up Helm
	uses: azure/setup-helm@9bc31f4ebc9c6b171d7bfbaa5d006ae7abdb4310 # v5.0.1
	with:
	version: v4.3.0

	- uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7
	with:
	python-version: 3.14

	# TODO: switch back to a tagged release once chart-testing-action cuts one that supports ct v3.15.0
	- name: Set up chart-testing
	uses: helm/chart-testing-action@4b9e8ccd8d870c94667aec5e4ef54cc49934cd85 # main (post-v2.8.0)
	with:
	version: '3.15.0'
	yamllint_version: '1.37.1'
	yamale_version: '6.0.0'

	- name: Run chart-testing (list-changed)
	id: list-changed
	run: \|
	changed=$(ct list-changed --target-branch "${{ github.event.pull_request.base.ref }}")
	if [[ -n "$changed" ]]; then
	echo "changed=true" >> "$GITHUB_OUTPUT"
	fi

	- name: Add Helm Repositories
	if: steps.list-changed.outputs.changed == 'true'
	run: \|
	helm repo add bitnami https://charts.bitnami.com/bitnami
	helm repo update

	- name: Run chart-testing (lint)
	if: steps.list-changed.outputs.changed == 'true'
	run: \|
	ct lint \
	--debug \
	--config ct-lint.yaml \
	--target-branch "${{ github.event.pull_request.base.ref }}"