Use ring-compat feature so out signing keys work again

Cargo.lock

@@ -2200,6 +2200,7 @@ dependencies = [
  "ruma-common",
  "serde_json",
  "sha2",
+ "subslice",
  "thiserror",
 ]
 
@@ -2520,6 +2521,15 @@ dependencies = [
  "der",
 ]
 
+[[package]]
+name = "subslice"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0a8e4809a3bb02de01f1f7faf1ba01a83af9e8eabcd4d31dd6e413d14d56aae"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "subtle"
 version = "2.4.1"

Cargo.toml

@@ -21,7 +21,7 @@ tower-http = { version = "0.3.4", features = ["add-extension", "cors", "compress
 
 # Used for matrix spec type definitions and helpers
 #ruma = { version = "0.4.0", features = ["compat", "rand", "appservice-api-c", "client-api", "federation-api", "push-gateway-api-c", "state-res", "unstable-pre-spec", "unstable-exhaustive-types"] }
-ruma = { git = "https://github.com/ruma/ruma", rev = "86b58cafb8abe29eecd0272d90b40bbb61a7919b", features = ["compat", "rand", "appservice-api-c", "client-api", "federation-api", "push-gateway-api-c", "state-res", "unstable-msc2448", "unstable-exhaustive-types"] }
+ruma = { git = "https://github.com/ruma/ruma", rev = "86b58cafb8abe29eecd0272d90b40bbb61a7919b", features = ["compat", "rand", "appservice-api-c", "client-api", "federation-api", "push-gateway-api-c", "state-res", "unstable-msc2448", "unstable-exhaustive-types", "ring-compat"] }
 #ruma = { git = "https://github.com/timokoesters/ruma", rev = "50c1db7e0a3a21fc794b0cce3b64285a4c750c71", features = ["compat", "rand", "appservice-api-c", "client-api", "federation-api", "push-gateway-api-c", "state-res", "unstable-pre-spec", "unstable-exhaustive-types"] }
 #ruma = { path = "../ruma/crates/ruma", features = ["compat", "rand", "appservice-api-c", "client-api", "federation-api", "push-gateway-api-c", "state-res", "unstable-pre-spec", "unstable-exhaustive-types"] }