fix(tests): accept '/' in durable execution ARN regex (#9038)

DurableIntegBase.assert_invoke_output parsed the ARN line of
sam local invoke output with [a-f0-9-]+, which truncates at the
first '/'. After aws-durable-execution-sdk-python-testing#216 the
emulator returns <uuid>/<invocation-id>, so subsequent
sam local execution history|stop|get calls in the same test
received only the leading UUID and 404'd, failing every
test_local_invoke_durable_function_* test plus
test_execution_stop_already_completed with AssertionError: 1 != 0.

Switching to \S+ captures the full ARN as printed and stays
backwards-compatible with the old UUID-only form.

Fixes #9037

Author: yaythomas

tests/integration/durable_integ_base.py

@@ -152,7 +152,7 @@ def assert_invoke_output(
 
         self.assertIn("Execution Summary:", stdout_str, f"Expected execution summary in output: {stdout_str}")
 
-        arn_match = re.search(r"ARN:\s+([a-f0-9-]+)", stdout_str)
+        arn_match = re.search(r"ARN:\s+(\S+)", stdout_str)
         self.assertIsNotNone(arn_match, f"Could not find ARN in output: {stdout_str}")
         execution_arn = arn_match.group(1) if arn_match else ""