add upper pin for asdf #1690

	name: CITATION.cff
	on:
	push:
	paths:
	- CITATION.cff
	pull_request:
	release:

	jobs:
	Validate-CITATION-cff:
	name: Validate CITATION.cff
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: '3.10'
	- uses: actions/cache@v4
	with:
	path: ~/.cache/pip
	key: pip-cffconvert-0
	- name: pip installs
	run: pip install cffconvert
	- name: run cffconvert validate
	run: cffconvert --validate

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