Change pandas 'append' to 'concat' to enable upgrade to pandas v2. #2338

	name: CI

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]
	# Allows to run this workflow manually from the Actions tab on GitHub.
	workflow_dispatch:

	jobs:
	test-ubuntu:
	name: "test on ${{ matrix.python-version }} on ${{ matrix.os }}"
	runs-on: "${{ matrix.os }}"
	strategy:
	matrix:
	python-version: ["3.10"]
	os: [ubuntu-latest]
	steps:
	- uses: actions/checkout@v3
	- name: Set up Poetry
	run: pipx install poetry
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'poetry'
	- name: Install Chirp and its dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install libsndfile1 ffmpeg
	poetry install
	- name: Test with unittest
	run: poetry run python -m unittest discover -s chirp/tests -p "*test.py"

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