ENG-222: Fix PHPStan error for file_get_contents return type

Cast file_get_contents() return to string to satisfy PHPStan level 8,
since it returns string|false.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: d4mation

src/Commands/Info.php

@@ -54,7 +54,7 @@ protected function execute( InputInterface $input, OutputInterface $output ) {
 			$suffix = 'does not exist';
 			$array_to_populate = 'files_absent';
 
-			if ( $exists && $file === '.puprc' && ! json_decode( file_get_contents( $file ) ) ) {
+			if ( $exists && $file === '.puprc' && ! json_decode( (string) file_get_contents( $file ) ) ) {
 				$prefix = '❌';
 				$suffix = '<fg=green>exists</> but could not be parsed: ' . json_last_error_msg();
 				$array_to_populate = 'files_error';