feat(spanner): log client configuration at startup #792

	on:
	push:
	branches:
	- main
	pull_request:
	name: Presubmit checks
	permissions:
	contents: read
	pull-requests: write
	jobs:
	lint:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v5
	- name: Setup Python
	uses: actions/setup-python@v6
	with:
	python-version: 3.14
	- name: Install nox
	run: python -m pip install nox
	- name: Check formatting
	run: nox -s lint
	units:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]

	steps:
	- name: Checkout code
	uses: actions/checkout@v5
	- name: Setup Python
	uses: actions/setup-python@v6
	with:
	python-version: ${{matrix.python}}
	- name: Install nox
	run: python -m pip install nox
	- name: Run unit tests
	run: nox -s unit-${{matrix.python}}

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