[PHP 8.2] Fix deprecated ${var} string interpolation patterns (#5154)

PHP 8.2 deprecates string interpolation patterns that place the
dollar sign outside the curly braces. This fixes such patterns
by replacing them with proper curly braced patterns.

Fix: `Drush\Psysh\DrushHelpCommand::execute()`

Reference:
 - [PHP.Watch: `${var}` string interpolation deprecated](https://php.watch/versions/8.2/$%7Bvar%7D-string-interpolation-deprecated)
 - [wiki.php.net RFC](https://wiki.php.net/rfc/deprecate_dollar_brace_string_interpolation)

src/Psysh/DrushHelpCommand.php

@@ -108,7 +108,7 @@ protected function execute(InputInterface $input, OutputInterface $output): void
                     $namespaces[$namespace] = [];
                 }
 
-                $namespaces[$namespace][] = sprintf("    <info>%-${width}s</info> %s%s", $name, $command->getDescription(), $aliases);
+                $namespaces[$namespace][] = sprintf("    <info>%-{$width}s</info> %s%s", $name, $command->getDescription(), $aliases);
             }
 
             $messages = [];