minor: ruff formatter

All changes are either:
- Correcting tabs
- Adding/removing line breaks
- Adding trailing commas

test/test_healthcheck.py

@@ -4,7 +4,7 @@ from httpx import AsyncClient
 
 @pytest.mark.anyio
 async def test_healthcheck(default_client: AsyncClient):
-    resp = await default_client.get("/healthcheck")
+	resp = await default_client.get("/healthcheck")
 
-    assert resp.status_code == 200
-    assert resp.json() == {"status": "ok"}
+	assert resp.status_code == 200
+	assert resp.json() == {"status": "ok"}