Introduce experimental config section and use it for concentrations. #4236

	name: Julia Tests
	on:
	push:
	branches: [main, update/pixi-lock, update/julia-manifest]
	paths-ignore: [".teamcity/**"]
	tags: ["*"]
	pull_request:
	paths-ignore: [".teamcity/**"]
	merge_group:
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true
	# needed to allow julia-actions/cache to delete old caches that it has created
	permissions:
	actions: write
	contents: read
	jobs:
	test:
	name: Julia ${{ matrix.os }} - ${{ matrix.arch }}
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os:
	- ubuntu-latest
	# https://github.com/Deltares/Ribasim/issues/825
	# - macOS-latest
	- windows-latest
	arch:
	- x64
	steps:
	- uses: actions/checkout@v4
	- uses: julia-actions/cache@v2
	with:
	cache-compiled: "true"
	cache-registries: "true"
	- uses: prefix-dev/[email protected]
	with:
	pixi-version: "latest"
	- name: Prepare pixi
	run: pixi run install-ci
	- name: Test Ribasim Core
	run: \|
	pixi run test-ribasim-core-cov
	- uses: julia-actions/julia-processcoverage@v1
	with:
	directories: core/src
	- uses: codecov/codecov-action@v4
	with:
	files: lcov.info
	token: ${{ secrets.CODECOV_TOKEN }}

Provide feedback