Remove couple of lint checks and modify another, add CSS to core to support new hgroup definition #1845

	name: Standard Ebooks toolset tests

	on: [push, pull_request]

	jobs:
	build:

	runs-on: ubuntu-22.04

	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v4
	with:
	python-version: '3.x'
	- name: Install Ubuntu packages
	run: \|
	sudo apt update
	sudo apt install calibre default-jre git python3-venv
	- name: Install pipx packages
	run: \|
	pipx install .
	pipx inject standardebooks pylint==2.17.3 pytest==7.3.1 mypy==1.2.0 types-requests==2.28.11.17 types-setuptools==67.7.0.0
	- name: Check type annotations with mypy
	run: $PIPX_HOME/venvs/standardebooks/bin/mypy
	- name: Check code with pylint
	run: $PIPX_HOME/venvs/standardebooks/bin/pylint tests/*.py se
	- name: Test with pytest
	run: $PIPX_HOME/venvs/standardebooks/bin/pytest

Provide feedback