Update sphinx requirement from <6.0 to <9.0 #298

	# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: CI (pip)

	on:
	push:
	branches: [master]
	pull_request:
	branches: [master]

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.9, "3.10", "3.11", "3.12"]

	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest
	pip install -r requirements.txt
	pip install -r requirements-dev.txt
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=C,E,F,W,N8 --show-source --statistics --exclude="examples/* .npy docs/ .pyx .pxd"
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=88 --statistics --exclude="examples/* .npy docs/ .pyx .pxd"
	- name: Build and install package from source
	run: pip install -e .
	- name: Test with pytest
	run: pytest --cov=./ --cov-report=xml
	- name: Upload coverage
	uses: codecov/codecov-action@v4.5.0

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