Switch a test from aws-lc-rs to ring since aws-lc-rs is no longer enabled in dev-dependencies

Author: asonix

actix-tls/tests/accept-openssl.rs

@@ -111,7 +111,7 @@ fn rustls_connector(_cert: String, _key: String) -> ClientConfig {
 
 #[actix_rt::test]
 async fn accepts_connections() {
-    tokio_rustls_026::rustls::crypto::aws_lc_rs::default_provider()
+    tokio_rustls_026::rustls::crypto::ring::default_provider()
         .install_default()
         .unwrap();