refactor(admin_gui): simplify code with table.concat #5043

	name: Backport
	on:
	pull_request_target:
	types: [closed, labeled] # runs when the pull request is closed/merged or labeled (to trigger a backport in hindsight)
	permissions:
	contents: write # so it can comment
	pull-requests: write # so it can create pull requests
	actions: write
	jobs:
	backport:
	name: Backport
	runs-on: ubuntu-latest
	if: github.event.pull_request.merged
	steps:
	- uses: actions/checkout@v4
	- name: Create backport pull requests
	uses: korthout/backport-action@08bafb375e6e9a9a2b53a744b987e5d81a133191 # v2.1.1
	with:
	github_token: ${{ secrets.PAT }}
	pull_title: '[backport -> ${target_branch}] ${pull_title}'
	merge_commits: 'skip'
	copy_labels_pattern: ^(?!backport ).* # copies all labels except those starting with "backport "
	label_pattern: ^backport (release\/[^ ]+)$ # filters for labels starting with "backport " and extracts the branch name
	pull_description: \|-
	Automated backport to `${target_branch}`, triggered by a label in #${pull_number}.
	copy_assignees: true
	copy_milestone: true
	copy_requested_reviewers: true

Provide feedback