Fix FastAPI implementation (#4457)

frameworks/Python/fastapi/fastapi_conf.py

@@ -3,7 +3,7 @@ import os
 
 _is_travis = os.environ.get('TRAVIS') == 'true'
 
-workers = multiprocessing.cpu_count() * 2
+workers = multiprocessing.cpu_count()
 if _is_travis:
     workers = 2
 

frameworks/Python/fastapi/requirements.txt

@@ -1,6 +1,6 @@
 asyncpg==0.18.2
 gunicorn==19.9.0
-fastapi==0.1.12
+fastapi==0.5.0
 jinja2==2.10
 ujson==1.35
 uvicorn==0.3.23