Merge branch '6.4' into 7.0

* 6.4: be explicit about the signal to reset fix Finder test using the ftp wrapper by switching the server being used use firewall-specific user checkers when manually logging in users

Author: xabbuh

Tests/Iterator/RecursiveDirectoryIteratorTest.php

@@ -27,7 +27,7 @@ protected function setUp(): void
  */
  public function testRewindOnFtp()
  {
- $i = new RecursiveDirectoryIterator('ftp://speedtest:speedtest@ftp.otenet.gr/', \RecursiveDirectoryIterator::SKIP_DOTS);
+ $i = new RecursiveDirectoryIterator('ftp://test.rebex.net/', \RecursiveDirectoryIterator::SKIP_DOTS);
 
  $i->rewind();
 
@@ -39,11 +39,11 @@ public function testRewindOnFtp()
  */
  public function testSeekOnFtp()
  {
- $i = new RecursiveDirectoryIterator('ftp://speedtest:speedtest@ftp.otenet.gr/', \RecursiveDirectoryIterator::SKIP_DOTS);
+ $i = new RecursiveDirectoryIterator('ftp://test.rebex.net/', \RecursiveDirectoryIterator::SKIP_DOTS);
 
  $contains = [
- 'ftp://speedtest:speedtest@ftp.otenet.gr'.\DIRECTORY_SEPARATOR.'test100Mb.db',
- 'ftp://speedtest:speedtest@ftp.otenet.gr'.\DIRECTORY_SEPARATOR.'test100k.db',
+ 'ftp://test.rebex.net'.\DIRECTORY_SEPARATOR.'pub',
+ 'ftp://test.rebex.net'.\DIRECTORY_SEPARATOR.'readme.txt',
  ];
  $actual = [];