fix: requirements problem

Author: EstrellaXD

backend/requirements.txt

@@ -13,7 +13,7 @@ requests==2.31.0
 six==1.16.0
 sniffio==1.3.0
 soupsieve==2.4.1
-typing_extensions==4.6.3
+typing_extensions
 urllib3==2.0.3
 uvicorn==0.22.0
 attrdict==2.0.1