Commit validation is outdated and fails on CI

[pedro-psb]

I've received this error on a PR and the issue #94 is valid.

Checking commit message for 343cbb4.
Error: issue #94 has invalid status of CLOSED - CURRENTRELEASE. Status must be one of NEW, ASSIGNED, POST, MODIFIED.
Error: Process completed with exit code 1.

The problem is that the commit-validation script is outdated and points to a no longer used service:

pulp-openapi-generator/.ci/scripts/validate_commit_message.py

Lines 25 to 34 in b9e9751

	def __check_status(issue):
	response = requests.get(f"{REDMINE_URL}/issues/{issue}.json")
	response.raise_for_status()
	bug_json = response.json()
	status = bug_json["issue"]["status"]["name"]
	if status not in STATUSES:
	sys.exit(
	"Error: issue #{issue} has invalid status of {status}. Status must be one of "
	"{statuses}.".format(issue=issue, status=status, statuses=", ".join(STATUSES))
	)