✨ Add docs and tests for Python 3.9 and Python 3.10 (#3712)

Co-authored-by: Thomas Grainger <tagrain@gmail.com>

docs_src/dependencies/tutorial001_py310.py

@@ -0,0 +1,17 @@
+from fastapi import Depends, FastAPI
+
+app = FastAPI()
+
+
+async def common_parameters(q: str | None = None, skip: int = 0, limit: int = 100):
+    return {"q": q, "skip": skip, "limit": limit}
+
+
+@app.get("/items/")
+async def read_items(commons: dict = Depends(common_parameters)):
+    return commons
+
+
+@app.get("/users/")
+async def read_users(commons: dict = Depends(common_parameters)):
+    return commons