fix: remove 5.6 from the CI #61

	---
	name: Test build-docs.yml
	on:
	pull_request:
	types:
	- opened
	- reopened
	- synchronize

	permissions:
	# permissions required by build-docs.yml
	pages: write
	# permissions required by build-docs.yml
	id-token: write

	jobs:
	build-docs:
	uses: ./.github/workflows/build-docs.yml

	build-docs-and-publish:
	uses: ./.github/workflows/build-docs.yml
	with:
	publish: true

	verify-build-docs-and-publish:
	runs-on: ubuntu-latest
	needs: build-docs-and-publish
	steps:
	- name: Fail if page_url is not defined
	if: ${{ ! needs.build-docs-and-publish.outputs.page_url }}
	run: \|
	echo "::error title=Failed to publish::Requested build-docs.yml to build and publish HTML files, but page_url is not defined"
	exit 1

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