Check for upstream releases #173

	---
	name: Check for upstream releases

	on:
	schedule:
	- cron: 0 0 * * *
	workflow_dispatch: {}

	permissions:
	contents: read

	jobs:
	check-upstream:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v4
	with:
	token: ${{ secrets.CUSTOM_GITHUB_TOKEN }}

	- run: npm install compare-versions@6

	- uses: actions/github-script@v7
	with:
	script: \|
	const { compare, compareVersions } = require(`compare-versions`);

	const upstreamTags = (
	await github.rest.repos.listReleases({
	owner: `protocolbuffers`,
	repo: `protobuf`,
	per_page: 100,
	})
	).data
	.filter((release) => !release.draft && !release.prerelease)
	.map((release) => release.tag_name)
	.filter((tag) => compare(tag, `v22.0`, `>=`));

	const originTags = new Set(
	(
	await github.rest.repos.listTags({
	owner: context.payload.repository.owner.login,
	repo: context.payload.repository.name,
	per_page: 100,
	})
	).data.map((tag) => tag.name)
	);

	const tagsToCreate = upstreamTags
	.filter((tag) => !originTags.has(tag))
	.sort(compareVersions);

	if (!tagsToCreate.length) {
	return;
	}

	for (const tag of tagsToCreate) {
	await exec.exec(`git`, [`tag`, tag]);
	await exec.exec(`git`, [`push`, `--tags`]);
	await new Promise((resolve) => setTimeout(resolve, 30 * 1000));
	}

Provide feedback