s390x version bump #629

	name: s390x version bump

	# This workflow pulls the latest official actions runner version using GH API
	# and update our s390x Dockerfile.
	# If a change happens, the change will be commited in a versioned branch and
	# a PR will be created. Upon merging, the branch will be deleted.
	#
	# The workflow can be triggered manually (workflow_dispatch) but also runs nightly
	# before the nightly rebuild.
	on:
	schedule:
	- cron: '00 17 * * *'
	workflow_dispatch:

	jobs:
	bump_version:
	runs-on: ubuntu-latest
	permissions:
	contents: write
	pull-requests: write
	steps:
	- name: Checkout repository
	uses: actions/checkout@v2

	- name: Get latest runner release
	id: release
	run: \|
	ACTIONS_VERSION=$(curl -L https://api.github.com/repos/actions/runner/releases/latest \| jq -r '.name[1:]')
	if [ "${ACTIONS_VERSION}" == "null" ]
	then
	echo "::error Invalid ACTIONS_VERSION ${ACTIONS_VERSION}"
	exit 1
	fi
	echo "ACTIONS_VERSION=${ACTIONS_VERSION}" >> $GITHUB_OUTPUT

	- name: Update release
	id: bump
	run: sed -i 's#^ARG version=.*#ARG version=${{ steps.release.outputs.ACTIONS_VERSION}}#' s390x.Dockerfile

	- name: Create Pull Request
	uses: peter-evans/create-pull-request@v4
	with:
	title: "[automated] Bumping s390x containers to action-runners v${{ steps.release.outputs.ACTIONS_VERSION}}"
	commit-message: "[automated] Bumping s390x containers to action-runners v${{ steps.release.outputs.ACTIONS_VERSION}}"
	branch: "version-bump/${{ steps.release.outputs.ACTIONS_VERSION}}"
	delete-branch: true
	body: ""
	reviewers: anakryiko, chantra, danielocfb, yurinnick

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