Other changes for 0.3.6

[prjemian]

Other changes could be made before next level-3 release (0.3.6):

• Python versions in CI matrix:

  punx/.github/workflows/unit-tests-pytest.yml

  Lines 11 to 17 in f24c79c

  	python-version:
  	# - "3.12" # 2023-08-28: not available now
  	- "3.11"
  	- "3.10"
  	- "3.9"
  	- "3.8"
  	# - "3.7"

• Switch linting to ruff and pre-commit
• Review & revise python setup in CI:

  punx/.github/workflows/unit-tests-pytest.yml

  Lines 23 to 38 in f24c79c

  	- name: Create Python ${{ matrix.python-version }} environment
  	uses: mamba-org/setup-micromamba@v2
  	with:
  	environment-file: environment.yml
  	environment-name: anaconda-test-env-py-${{ matrix.python-version }}
  	condarc: |
  	channel-priority: flexible
  	init-shell: bash
  	create-args: >-
  	pytest
  	pytest-cov
  	python=${{ matrix.python-version }}
  	pyyaml
  	setuptools-scm
  	cache-environment: true
  	cache-environment-key: env-key-${{ matrix.python-version }}

Originally posted by @prjemian in #250 (comment)

[prjemian]

[prjemian]

While we're at it, the punx-feedstock can be updated, as advised by the conda-forge-linting service.