Merge branch '6.4' into 7.1

* 6.4:
  Replace external FTP server by a local docker instance
  [PhpUnitBridge][Console][VarDumper] Fix handling NO_COLOR env var
  fix test
  [Validator] Add test for `D` regex modifier in `TimeValidator`

Output/StreamOutput.php

@@ -90,7 +90,7 @@ protected function doWrite(string $message, bool $newline): void
     protected function hasColorSupport(): bool
     {
         // Follow https://no-color.org/
-        if ('' !== ($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR') ?: '')) {
+        if ('' !== (($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR'))[0] ?? '')) {
             return false;
         }