fix(build): ldap3 切换到 rustls 后端以消除 openssl-sys 依赖

musl 交叉编译时 openssl-sys 找不到系统 OpenSSL, 改用 tls-rustls feature

apps/aether-gateway/Cargo.toml

@@ -37,7 +37,7 @@ flate2.workspace = true
 futures-util.workspace = true
 hmac.workspace = true
 http.workspace = true
-ldap3 = "0.11"
+ldap3 = { version = "0.11", default-features = false, features = ["sync", "tls-rustls"] }
 parking_lot = "0.12"
 regex.workspace = true
 redis.workspace = true