fix: default value for DataChangeFilter.Trigger #1588

	# 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: Python package

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

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.7', '3.11', 'pypy-3.8']

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install flake8 pytest mypy
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	if [ -f dev_requirements.txt ]; then pip install -r dev_requirements.txt; fi
	- name: Lint with flake8
	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. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --statistics
	# - name: Lint with mypy
	# run: \|
	# python -m pip install types-aiofiles types-python-dateutil types-pytz
	# python -m mypy --show-error-code asyncua/
	- name: Test with pytest
	run: \|
	pytest -v -s

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