software/js-drone: Update FPS value

Update FPS value to respect minimum sampling value of open62541 monitored items

software/js-drone/buildout.hash.cfg

@@ -26,7 +26,7 @@ md5sum = 1ff50063f5a54712a0bc0ff38fa74630
 
 [main]
 filename = main.js
-md5sum = 5f66cdcc84945749e1f8f7b017e70fc2
+md5sum = c22879bb553a0932dd145a58acdf37e6
 
 [pubsub]
 filename = pubsub.js

software/js-drone/main.js

@@ -29,8 +29,8 @@ import { open, exit } from "std";
   var pubsubWorker,
     worker = new Worker("{{ worker_script }}"),
     user_script = scriptArgs[1],
-    // Use the same FPS than browser's requestAnimationFrame
-    FPS = 1000 / 60,
+    // Minimum sampling interval for open62541 monitored items
+    FPS = 50,
     previous_timestamp,
     can_update = false;