fix: replace deprecated client.request with client:request

JavaHello · JavaHello · commit affc5d16f1de · 2025-12-22T09:45:32.000+08:00
diff --git a/lua/spring_boot/util.lua b/lua/spring_boot/util.lua
@@ -86,7 +86,8 @@ M.execute_command = function(client, command, param, callback)
       end
     end
   end
-  client.request("workspace/executeCommand", {
+  -- client.request deprecated
+  client:request("workspace/executeCommand", {
     command = command,
     arguments = param,
   }, callback, nil)
