chore(deps): update rand requirement from 0.8 to 0.9 (#226)

Signed-off-by: jokemanfire <hu.dingyang@zte.com.cn>

examples/servers/Cargo.toml

@@ -19,7 +19,7 @@ tracing-subscriber = { version = "0.3", features = [
     "fmt",
 ] }
 futures = "0.3"
-rand = { version = "0.8", features = ["std"] }
+rand = { version = "0.9", features = ["std"] }
 axum = { version = "0.8", features = ["macros"] }
 schemars = { version = "0.8", optional = true }
 reqwest = { version = "0.12", features = ["json"] }

examples/servers/src/mcp_oauth_server.rs

@@ -11,7 +11,7 @@ use axum::{
     response::{Html, IntoResponse, Redirect, Response},
     routing::{get, post},
 };
-use rand::{Rng, distributions::Alphanumeric};
+use rand::{Rng, distr::Alphanumeric};
 use rmcp::transport::{
     SseServer,
     auth::{
@@ -216,7 +216,7 @@ struct UserInfo {
 }
 
 fn generate_random_string(length: usize) -> String {
-    rand::thread_rng()
+    rand::rng()
         .sample_iter(&Alphanumeric)
         .take(length)
         .map(char::from)