chore(deps): update dependency linkinator to v6 #1326

	# This file is manually updated due to specific needs of the cloud
	# profiler agent, e.g., not supporting Windows.
	#
	# It should be in sync with Google's template
	# https://github.com/googleapis/synthtool/blob/master/synthtool/gcp/templates/node_library/.github/workflows/ci.yaml
	# for Node.js GCP libraries as much as possible.

	on:
	push:
	branches:
	- main
	pull_request:
	name: ci
	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	node: [14, 16, 18]
	steps:
	- uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
	- uses: actions/setup-node@v3
	with:
	node-version: ${{ matrix.node }}
	- run: node --version
	# The first installation step ensures that all of our production
	# dependencies work on the given Node.js version, this helps us find
	# dependencies that don't match our engines field:
	- run: npm install --production --engine-strict --ignore-scripts --no-package-lock
	# Clean up the production install, before installing dev/production:
	- run: rm -rf node_modules
	- run: npm install
	- run: npm test
	env:
	MOCHA_THROW_DEPRECATION: false
	lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
	- uses: actions/setup-node@v3
	with:
	node-version: 14
	- run: npm install
	- run: npm run lint
	docs:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
	- uses: actions/setup-node@v3
	with:
	node-version: 14
	- run: npm install
	- run: npm run docs
	- uses: JustinBeckwith/linkinator-action@v1
	with:
	paths: docs/

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