Switch iscoroutinefunction from asyncio to inspect (#39)

The inspect.iscoroutinefunction function was added in Python 3.5, and
the asyncio.iscoroutinefunction function was removed in Python 3.14.

Author: cottsay

colcon_parallel_executor/executor/parallel.py

@@ -5,6 +5,7 @@
 from concurrent.futures import ALL_COMPLETED
 from concurrent.futures import FIRST_COMPLETED
 from contextlib import suppress
+from inspect import iscoroutinefunction
 import logging
 import os
 import signal
@@ -150,7 +151,7 @@ async def _execute(self, args, jobs, *, on_error):
 
             # pass them to the executor
             for package_name, job in take_jobs:
-                assert asyncio.iscoroutinefunction(job.__call__), \
+                assert iscoroutinefunction(job.__call__), \
                     'Job is not a coroutine'
                 future = asyncio.ensure_future(job())
                 futures[future] = job