Update requirements.txt

fix requirements version: sqlalchemy, uvicorn

Author: just495

requirements.txt

@@ -1,6 +1,6 @@
-SQLAlchemy>=1.4.39
+SQLAlchemy>=1.4.39,<2.0.0
 pydantic>=1.9.1
 fastapi>=0.79.0
-uvicorn>=0.18.2
+uvicorn>=0.18.2,<0.20.0
 simplejson>=3.17.6
 tortoise-orm>=0.19.2