Refactor LT/GT into a oneof #145

	name: PR Hygiene
	# Prevent writing to the repository using the CI token.
	# Ref: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#permissions
	permissions:
	pull-requests: read
	on:
	workflow_call:
	pull_request:
	# By default, a workflow only runs when a pull_request's activity type is opened,
	# synchronize, or reopened. We explicity override here so that PR titles are
	# re-linted when the PR text content is edited.
	types:
	- opened
	- edited
	- reopened
	- synchronize
	jobs:
	lint-title:
	name: Lint title
	runs-on: ubuntu-latest
	steps:
	- name: Lint title
	uses: morrisoncole/[email protected]
	with:
	repo-token: "${{ secrets.GITHUB_TOKEN }}"
	# https://regex101.com/r/I6oK5v/1
	title-regex: "^[A-Z].*[^.?!,\\-;:]$"
	on-failed-regex-fail-action: true
	on-failed-regex-create-review: false
	on-failed-regex-request-changes: false
	on-failed-regex-comment: "PR titles must start with a capital letter and not end with punctuation."
	on-succeeded-regex-dismiss-review-comment: "Thanks for helping keep our PR titles consistent!"

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