fix: change pull request trigger to pull_request for CI workflow #128

	name: Lint and validate OpenAPI specs
	on:
	- push
	- pull_request
	jobs:
	lint:
	name: Lint OpenAPI definition
	runs-on: ubuntu-latest
	steps:
	- name: Check out head branch
	uses: actions/checkout@v4
	- name: Run OpenAPI Lint Action
	uses: mhiew/redoc-lint-github-action@v4
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	file: openapi/workflow_execution_service.openapi.yaml
	diff:
	name: Show OpenAPI differences relative to target branch
	runs-on: ubuntu-latest
	if: ${{ github.event_name == 'pull_request' }}
	steps:
	- name: Check out head branch
	uses: actions/checkout@v4
	with:
	ref: ${{ github.ref }}
	path: head
	- name: Check out base branch
	uses: actions/checkout@v4
	with:
	ref: ${{ github.event.pull_request.base.ref }}
	path: base
	- name: Run OpenAPI Diff Action
	uses: mvegter/[email protected]
	with:
	head-spec: head/openapi/workflow_execution_service.openapi.yaml
	base-spec: base/openapi/workflow_execution_service.openapi.yaml

	validate:
	name: Validate OpenAPI definition
	runs-on: ubuntu-latest
	steps:
	- name: Check out head branch
	uses: actions/checkout@v4
	- name: Run OpenAPI Validate Action
	uses: swaggerexpert/[email protected]
	env:
	PUPPETEER_NO_SANDBOX: "true"
	PUPPETEER_EXECUTABLE_PATH: "/usr/bin/chromium-browser"
	with:
	definition-file: openapi/workflow_execution_service.openapi.yaml

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