fix: Add nullable to coupon terminated_at #730

	name: Validate OpenAPI schema - openapi-spec-validator

	on:
	push:
	branches:
	- 'main'
	pull_request:
	types: [opened, synchronize, reopened]

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python
	uses: actions/setup-python@v3
	with:
	python-version: '3.11'
	- name: Install dependencies
	run: \|
	python -m pip install "openapi-spec-validator"
	- name: Run tests
	run: \|
	python -m openapi_spec_validator "openapi.yaml"

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