Add Python 3.13 support, drop Python 3.9 support #83

	name: Run unit tests

	on:
	push:
	branches: [ "dev" ]
	pull_request:
	branches: [ "dev" ]
	schedule:
	- cron: '00 12 1 * *' # Monthly

	jobs:
	run-test-suite:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python: ["3.10", "3.11", "3.12", "3.13"]

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python }}
	# https://github.com/actions/cache/blob/main/examples.md#python---pip
	- uses: actions/cache@v4
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	- 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 --max-complexity=10 --max-line-length=127 --statistics
	- name: Format with black
	run: black --line-length=127 --check --diff .
	- name: Run all tests with pytest
	run: pytest --cov=pittapi tests/

Provide feedback