Automatically manage pre-release branches #5

	name: Auto-update pre-release branches

	on:
	push:
	branches:
	- main
	pull_request:
	paths:
	- .github/workflows/update-pre-release-branches.yaml
	schedule:
	- cron: "0 0 * * *" # Runs every midnight

	permissions:
	contents: read

	jobs:
	update-branches:
	permissions:
	contents: write # for Git to git push
	runs-on: ubuntu-latest
	outputs:
	preRelease: ${{ steps.determine.outputs.preRelease }}
	branch: ${{ steps.determine.outputs.branch }}
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	with:
	ssh-key: ${{ secrets.BOT_SSH_KEY }}
	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.10'
	- name: Install Python dependencies
	run: pip3 install packaging requests
	- name: Define git credentials
	run: \|
	# Needed to create commits.
	git config --global user.name "Github Actions"
	git config --global user.email "worker@org.com"
	- name: 'Prepare pre-release git branch'
	run: \|
	python3 ./build-scripts/k8s_release.py prepare_prerelease_git_branch
	- name: Clean obsolete branches
	run: \|
	python3 ./build-scripts/k8s_release.py clean_obsolete_git_branches

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