build: use multiScm for Kokoro release builds #543

	on:
	pull_request:
	branches:
	- main
	name: unittest
	jobs:
	unit:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python: ['3.8', '3.9', '3.10', '3.11', '3.12']
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python }}
	- name: Install nox
	run: \|
	python -m pip install --upgrade setuptools pip wheel
	python -m pip install nox
	- name: Run unit tests
	env:
	COVERAGE_FILE: .coverage-${{ matrix.python }}
	run: \|
	nox -s unit-${{ matrix.python }}
	- name: Upload coverage results
	uses: actions/upload-artifact@v4
	with:
	name: coverage-artifact-${{ matrix.python }}
	path: .coverage-${{ matrix.python }}
	include-hidden-files: true

	cover:
	runs-on: ubuntu-latest
	needs:
	- unit
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.8"
	- name: Install coverage
	run: \|
	python -m pip install --upgrade setuptools pip wheel
	python -m pip install coverage
	- name: Download coverage results
	uses: actions/download-artifact@v4
	with:
	path: .coverage-results/
	- name: Report coverage results
	run: \|
	find .coverage-results -type f -name '*.zip' -exec unzip {} \;
	coverage combine .coverage-results/*/.coverage
	coverage report --show-missing --fail-under=96

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