fix branch names; recent python; update actions #5

	name: Meshgram

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

	jobs:
	test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'
	check-latest: true
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	- name: Lint with flake8
	continue-on-error: true
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=120 --statistics
	- name: Test with pytest
	run: \|
	pytest

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