Update tests to clarify --quiet option includes non-interactive mode

Author: mirko-pagliai

tests/TestCase/Command/ExportCommandTest.php

@@ -68,7 +68,7 @@ public function testBuildOptionParser(): void
                    <comment>$defaultTarget</comment>
                    (default target directory).
 --help, -h         Display this help.
---quiet, -q        Enable quiet output.
+--quiet, -q        Enable quiet output and non-interactive mode.
 --timeout, -t      Timeout for shell commands
 --verbose, -v      Enable verbose output.
 

tests/TestCase/Command/ImportCommandTest.php

@@ -56,7 +56,7 @@ public function testBuildOptionParser(): void
 --connection      Name of the alternative connection to use, for example
                   if you are not using the default connection
 --help, -h        Display this help.
---quiet, -q       Enable quiet output.
+--quiet, -q       Enable quiet output and non-interactive mode.
 --timeout, -t     Timeout for shell commands
 --verbose, -v     Enable verbose output.