Migrate asyncio.get_event_loop() to get_running_loop() in watchman

Summary:
Automated codemod to replace deprecated asyncio.get_event_loop() with
asyncio.get_running_loop() inside async functions.

Reviewed By: drinkmorewaterr

Differential Revision: D92192039

fbshipit-source-id: 99ea99a55948fb1362f6307215673e52280d6787

Author: fried

watchman/python/pywatchman_aio/__init__.py

@@ -65,7 +65,7 @@ def _resolve_sockname_helper():
 
 async def _resolve_sockname():
     """Find the Unix socket path to the global Watchman instance."""
-    loop = asyncio.get_event_loop()
+    loop = asyncio.get_running_loop()
     return await loop.run_in_executor(None, _resolve_sockname_helper)