Bump actions/stale from 5 to 6 #5

	name: PR Milestone

	on:
	pull_request_target:
	types: [ closed ]

	jobs:
	milestone:
	if: ${{ github.event.pull_request.merged == true }}
	runs-on: ubuntu-latest
	permissions:
	contents: read
	issues: write
	pull-requests: write
	steps:
	- uses: actions/github-script@v6
	with:
	script: \|
	await github.rest.issues.update({
	owner: context.repo.owner,
	repo: context.repo.repo,
	issue_number: ${{ github.event.pull_request.number }},
	milestone: 42
	});

	// graphql query to get referenced issues to merged pull request
	const query = `query($_url:URI!) {
	resource(url:$_url) {
	... on PullRequest {
	closingIssuesReferences(first:10) {
	nodes {
	number
	}
	}
	}
	}
	}`;

	const variables = {
	_url: "https://github.com/ankidroid/${{ github.event.repository.name }}/pull/${{ github.event.pull_request.number }}"
	};

	const result = await github.graphql(query, variables);
	const refIssues = result.resource.closingIssuesReferences.nodes;

	for (issue of refIssues) {
	console.log("Adding milestone to linked issue: ", issue.number);

	// if issues have milestone, then it will be removed and updated with following
	await github.rest.issues.update({
	owner: context.repo.owner,
	repo: context.repo.repo,
	issue_number: issue.number,
	milestone: 42
	});
	}

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