fix: gh action version update. #2

	name: Test MkDocs site

	on: [push, pull_request]

	jobs:
	build_and_test:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.11"
	cache: "pip"

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install mkdocs mkdocs-material

	- name: Set up Node.js
	uses: actions/setup-node@v4
	with:
	node-version: "18"

	- name: Install markdownlint-cli
	run: npm install -g markdownlint-cli

	- name: Lint Markdown files
	run: markdownlint */.md

	- name: Build MkDocs site
	run: mkdocs build

	- name: Install Ruby and Bundler
	run: sudo apt-get install -y ruby-full

	- name: Install HTML Proofer
	run: gem install html-proofer

	- name: Test MkDocs site
	run: htmlproofer ./site --only-4xx --check-html --check-img-http --check-favicon --check-external-hash --check-opengraph --check-opengraph-image

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