Bump actions/cache from 3 to 4 #168

	name: CI

	on:
	push:
	branches:
	- main
	pull_request:

	env:
	DOCKER_REGISTRY: ghcr.io
	DOCKER_IMAGE_NAME: ${{ github.repository }}

	jobs:
	codecov:
	name: codecov
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Execute linters and test suites
	run: ./docker/cibuild
	- name: Upload All coverage to Codecov
	uses: codecov/codecov-action@v3
	with:
	token: ${{ secrets.CODECOV_TOKEN }}
	file: ./coverage.xml
	fail_ci_if_error: false
	python-matrix:
	name: python-matrix
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.8", "3.9", "3.10", "3.11"]
	defaults:
	run:
	shell: bash -l {0}
	steps:
	- uses: actions/checkout@v4
	- name: Set up conda cache
	uses: actions/cache@v4
	with:
	path: ~/conda_pkgs_dir
	key: ${{ runner.os }}-conda-${{ hashFiles('**/environment.yml') }}
	restore-keys: ${{ runner.os }}-conda-
	- name: Set up pip cache
	uses: actions/cache@v4
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('/setup.cfg', '/requirements-dev.txt') }}
	restore-keys: ${{ runner.os }}-pip-
	- name: Set up Conda with Python ${{ matrix.python-version }}
	uses: conda-incubator/setup-miniconda@v3
	with:
	auto-update-conda: true
	environment-file: environment.yml
	python-version: ${{ matrix.python-version }}
	- name: update certs so PROJ can download the us_noaa_cshpgn.tif file
	run: \|
	sudo mkdir -p /etc/pki/tls/certs
	sudo curl https://curl.se/ca/cacert.pem -o /etc/pki/tls/certs/ca-bundle.crt
	- name: Execute linters and test suites
	run: ./scripts/cibuild

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