fix missing mamba issue in github action #139

	name: unit-test

	on:
	workflow_dispatch:
	pull_request:
	push:
	branches: [next, qa, main]
	tags: ['v*']

	jobs:
	linux:
	runs-on: ubuntu-latest
	defaults:
	run:
	shell: bash -l {0}
	steps:
	- uses: actions/checkout@v4
	- uses: conda-incubator/setup-miniconda@v3
	with:
	auto-update-conda: true
	channels: conda-forge,defaults
	use-mamba: true
	environment-file: environment.yml
	activate-environment: test
	- name: install additional dependencies
	run: \|
	echo "installing additional dependencies if cannot be installed from conda"
	- name: run unit tests
	run: \|
	echo "running unit tests"
	python -m pytest --cov=src --cov-report=xml --cov-report=term-missing tests/
	- name: upload coverage to codecov
	uses: codecov/codecov-action@v4
	if:
	github.actor != 'dependabot[bot]'
	with:
	token: ${{ secrets.CODECOV_TOKEN }}
	- name: build conda package
	run: \|
	# test that the conda package builds
	cd conda.recipe
	echo "versioningit $(versioningit ../)"
	# conda channels could have been defined in the conda-incubator, but you can copy/paste the lines
	# below to build the conda package in your local machine
	CHANNELS="--channel mantid/label/main --channel conda-forge"
	VERSION=$(versioningit ../) conda mambabuild $CHANNELS --output-folder . .
	conda verify noarch/mypackagename*.tar.bz2

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