Upgrade CI dependencies #203

	name: Check links in markdown

	on: push

	jobs:
	test_links_in_readme:
	timeout-minutes: 5
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: List files
	run: ls -la
	- uses: docker://pandoc/core:latest
	with:
	args: >- # allows you to break string into multiple lines
	--standalone
	--from markdown
	--output=mvr-spec.html
	mvr-spec.md
	- name: Run htmltest
	uses: wjdp/htmltest-action@master
	with:
	path: mvr-spec.html

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