⬆️ update hyper dep and allow HTTP/2 for the relay

This makes it easier for a gateway like Nginx to terminate TLS for a PTTH relay
without needing an entire TCP connection for each connected PTTH server.

Cargo.lock

@@ -636,9 +636,9 @@ dependencies = [
 
 [[package]]
 name = "httparse"
-version = "1.5.1"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "acd94fdbe1d4ff688b67b04eee2e17bd50995534a61539e45adfefb45e5e5503"
+checksum = "d897f394bad6a705d5f4104762e116a75639e470d80901eed05a860a95cb1904"
 
 [[package]]
 name = "httpdate"
@@ -648,9 +648,9 @@ checksum = "6456b8a6c8f33fee7d958fcd1b60d55b11940a79e63ae87013e6d22e26034440"
 
 [[package]]
 name = "hyper"
-version = "0.14.13"
+version = "0.14.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15d1cfb9e4f68655fa04c01f59edb405b6074a0f7118ea881e5026e4a1cd8593"
+checksum = "02c929dc5c39e335a03c405292728118860721b10190d98c2a0f0efd5baafbac"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -661,7 +661,7 @@ dependencies = [
  "http-body",
  "httparse",
  "httpdate",
- "itoa 0.4.8",
+ "itoa 1.0.1",
  "pin-project-lite",
  "socket2 0.4.4",
  "tokio",

crates/ptth_relay/Cargo.toml

@@ -20,7 +20,7 @@ futures = "0.3.7"
 futures-util = "0.3.8"
 handlebars = "3.5.3"
 http = "0.2.3"
-hyper = { version = "0.14.4", features = ["http1", "server", "stream", "tcp"] }
+hyper = { version = "0.14.20", features = ["http1", "http2", "server", "stream", "tcp"] }
 itertools = "0.9.0"
 rand = "0.8.3"
 rmp-serde = "0.15.5"