Update CRT to 1.5.5 + Related Sample Fixes (#140)

* update CRT to 1.5.5 and disconnect on connection for samples

* update lock

Author: TingDaoK

package-lock.json

@@ -30,6 +30,6 @@
     "typescript": "^3.9.7"
   },
   "dependencies": {
-    "aws-crt": "1.5.2"
+    "aws-crt": "1.5.5"
   }
 }

package.json

@@ -211,7 +211,8 @@ async function main(argv: Args) {
             const mqtt_client = new mqtt.MqttClient(client_bootstrap);
             return connect_to_iot(mqtt_client, argv, discovery_response);
         }).then(async (connection) => {
-            return execute_session(connection, argv);
+            await execute_session(connection, argv);
+            return connection.disconnect();
         }).then(() => {
             console.log('Complete!');
         })

samples/node/basic_discovery/index.ts

@@ -329,6 +329,7 @@ async function main(argv: Args) {
         await execute_register_thing(identity, token as string, argv);
     }
 
+    await connection.disconnect();
     // Allow node to die if the promise above resolved
     clearTimeout(timer);
 }

samples/node/basic_discovery/package-lock.json

@@ -179,6 +179,7 @@ async function main(argv: Args) {
 
     await connection.connect()
     await execute_session(connection, argv)
+    await connection.disconnect()
 
     // Allow node to die if the promise above resolved
     clearTimeout(timer);