Prune some duplicated dependencies in the dep graph (#11433)

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

substrate/client/offchain/Cargo.toml

@@ -20,7 +20,7 @@ futures = "0.3.21"
 futures-timer = "3.0.2"
 hex = "0.4"
 hyper = { version = "0.14.16", features = ["stream", "http2"] }
-hyper-rustls = "0.22.1"
+hyper-rustls = { version = "0.23.0", features = ["http2"] }
 num_cpus = "1.13"
 once_cell = "1.8"
 parking_lot = "0.12.0"

substrate/client/offchain/src/api/http.rs

@@ -32,7 +32,7 @@ use bytes::buf::{Buf, Reader};
 use fnv::FnvHashMap;
 use futures::{channel::mpsc, future, prelude::*};
 use hyper::{client, Body, Client as HyperClient};
-use hyper_rustls::HttpsConnector;
+use hyper_rustls::{HttpsConnector, HttpsConnectorBuilder};
 use once_cell::sync::Lazy;
 use sc_utils::mpsc::{tracing_unbounded, TracingUnboundedReceiver, TracingUnboundedSender};
 use sp_core::offchain::{HttpError, HttpRequestId, HttpRequestStatus, Timestamp};
@@ -53,7 +53,13 @@ pub struct SharedClient(Arc<Lazy<HyperClient<HttpsConnector<client::HttpConnecto
 impl SharedClient {
 	pub fn new() -> Self {
 		Self(Arc::new(Lazy::new(|| {
-			HyperClient::builder().build(HttpsConnector::with_native_roots())
+			let connector = HttpsConnectorBuilder::new()
+				.with_native_roots()
+				.https_or_http()
+				.enable_http1()
+				.enable_http2()
+				.build();
+			HyperClient::builder().build(connector)
 		})))
 	}
 }