replace ErrorKind::Forbidden with forbidden() non-exhaustive constructor

https://github.com/ruma/ruma/commit/917584e0cae4ae8642625f234f22f049bc159fee

Signed-off-by: strawberry <strawberry@puppygock.gay>

src/api/client_server/context.rs

@@ -48,7 +48,7 @@ pub async fn get_context_route(body: Ruma<get_context::v3::Request>) -> Result<g
 		.user_can_see_event(sender_user, &room_id, &body.event_id)?
 	{
 		return Err(Error::BadRequest(
-			ErrorKind::Forbidden,
+			ErrorKind::forbidden(),
 			"You don't have permission to view this event.",
 		));
 	}