fix: Allow `content` to be `None` for `role==tool` #1326

	name: Black Code Formatter

	on:
	pull_request:
	paths:
	- '**.py'
	workflow_dispatch:

	jobs:
	black-check:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: "Setup Python, Poetry and Dependencies"
	uses: packetcoders/action-setup-cache-python-poetry@main
	with:
	python-version: "3.11"
	poetry-version: "1.7.1"
	install-args: "-E dev" # TODO: change this to --group dev when PR #842 lands

	- name: Run Black
	run: poetry run black --check . -l 140

	# (Optional) If you want to automatically fix formatting issues
	# Uncomment the following steps:

	# - name: Auto-fix with Black and commit
	# if: failure()
	# run: \|
	# black .
	# git config --local user.email "[email protected]"
	# git config --local user.name "GitHub Action"
	# git commit -am "Apply Black formatting" \|\| echo "No changes to commit"
	# git push

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