🎨 Upgrade typing syntax for Python 3.10 (#14932)

Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
Co-authored-by: tiangolo <1326112+tiangolo@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

tests/test_security_http_basic_optional.py

@@ -1,5 +1,4 @@
 from base64 import b64encode
-from typing import Optional
 
 from fastapi import FastAPI, Security
 from fastapi.security import HTTPBasic, HTTPBasicCredentials
@@ -12,7 +11,7 @@ security = HTTPBasic(auto_error=False)
 
 
 @app.get("/users/me")
-def read_current_user(credentials: Optional[HTTPBasicCredentials] = Security(security)):
+def read_current_user(credentials: HTTPBasicCredentials | None = Security(security)):
     if credentials is None:
         return {"msg": "Create an account first"}
     return {"username": credentials.username, "password": credentials.password}