Update Node.js to >=20.18.1 #283

	# NOTE: This name appears in GitHub's Checks API and in workflow's status badge.
	name: ci-lint

	# Trigger the workflow when:
	on:
	# A push occurs to one of the matched branches.
	push:
	branches: [master]
	# Or when a pull request event occurs for a pull request against one of the
	# matched branches.
	pull_request:
	branches: [master]

	jobs:
	lint:
	# NOTE: This name appears in GitHub's Checks API.
	name: lint
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	# Checkout pull request HEAD commit instead of merge commit.
	ref: ${{ github.event.pull_request.head.sha }}
	# Fetch all history so gitlint can check the relevant commits.
	fetch-depth: '0'
	- name: Set up Python 3
	uses: actions/setup-python@v4
	with:
	python-version: '3.x'
	- name: Set up Node.js 20
	uses: actions/setup-node@v4
	with:
	node-version: '20.x'
	cache: yarn
	- name: Install dependencies
	run: yarn install --frozen-lockfile
	- name: Install gitlint
	run: \|
	python -m pip install gitlint
	- name: Lint documentation
	run: \|
	yarn lint-docs
	# Always run this step so that all linting errors can be seen at once.
	if: always()
	- name: Lint git commits
	run: \|
	yarn lint-git
	# Always run this step so that all linting errors can be seen at once.
	if: always()
	- name: ESLint
	# Disallow warnings and always throw errors.
	run: yarn lint
	# Always run this step so that all linting errors can be seen at once.
	if: always()
	- name: Validate TypeScript
	run: yarn checkTs
	# Always run this step so that all linting errors can be seen at once.
	if: always()

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