Merge pull request #4460 from grafana/dev #245

	name: Create PR to release updated oncall Helm chart

	"on":
	push:
	tags:
	- "v[0-9]+.[0-9]+.[0-9]+"
	jobs:
	update-helm-chart-versions:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Define app_version and helm version
	id: tags
	run: \|
	# Strip git ref prefix from version
	APP_VERSION=$(echo "${{ github.ref }}" \| sed -e 's,./$.$,\1,')
	# Strip "v" prefix from tag name
	[[ "${{ github.ref }}" == "refs/tags/"* ]] && HELM_VERSION=$(echo $APP_VERSION \| sed -e 's/^v//')
	echo "::set-output name=app_version::$APP_VERSION"
	echo "::set-output name=helm_version::$HELM_VERSION"

	- name: Update oncall Helm chart Chart.yaml
	uses: fjogeleit/[email protected]
	with:
	valueFile: "helm/oncall/Chart.yaml"
	branch: helm-release/${{ steps.tags.outputs.helm_version }}
	targetBranch: main
	masterBranchName: main
	createPR: "true"
	description: "Merge this PR to `main` branch to start another
	[github actions job](https://github.com/grafana/oncall/blob/dev/.github/workflows/helm_release.yml)
	that will release the updated version of the chart
	(version: ${{ steps.tags.outputs.helm_version }}, appVersion: ${{ steps.tags.outputs.app_version }})
	into `grafana/helm-charts` helm repository. \n\n
	This PR was created automatically by this
	[github action](https://github.com/grafana/oncall/blob/dev/.github/workflows/helm_release_pr.yml)."
	message: "Release oncall Helm chart ${{ steps.tags.outputs.helm_version }}"
	changes: \|
	{
	"version": "${{ steps.tags.outputs.helm_version }}",
	"appVersion": "${{ steps.tags.outputs.app_version }}"
	}

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