fix: add missing colons to async for and async def statements in gcloud.py and play.py

src/rspeech/play.py

@@ -33,7 +33,7 @@ import pygame
 import time 
 
 
-async def play_audio_async(filename)
+async def play_audio_async(filename):
     pygame.mixer.init()
     pygame.mixer.music.load(filename)
     time_start = time.time()