Fix Intermittent GraalVM test failures in the ftp library

[Nuvindu]

Area

Area/GraalVM

Description

The GraalVM Windows test suite for the ballerina/ftp module is currently failing due to an FTP connection timeout error. The failure occurs while attempting to connect to a locally started FTP test server during integration tests.

This issue appears to be specific to GraalVM on Windows, as the same tests pass on Ubuntu platform.

error {ballerina/ftp:2} Error (
  "Error while connecting to the FTP server with URL: 127.0.0.1:21214/.
   Read timed out",
  error("Read timed out")
)

Refer: https://github.com/ballerina-platform/module-ballerina-ftp/actions/runs/20369671103/job/58532981482?pr=1523#step:14:391

Version

2.15.1

[Nuvindu]

This is fixed by ballerina-platform/module-ballerina-ftp#1515