Fix deprecation warnings for pandas, workaround freq change, pin ruff up #2

	name: Regression and Version Tests

	on:
	push:
	branches:
	- master
	pull_request:
	workflow_dispatch:

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	build:
	runs-on: ${{ matrix.os }}
	environment: dev

	strategy:
	matrix:
	python-version: [3.9]
	os: [ubuntu-latest]
	dependency:
	- 'pandas>=2.2'
	- 'pandas<2'

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'pip'
	cache-dependency-path: 'setup.py'

	- name: Install dependencies
	run: \|
	make develop
	python -m pip install -U wheel twine setuptools "${{ matrix.dependency }}"

	- name: Test
	run: make test

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