fix compatibility with Symfony 7

Author: shyim

src/Command/RecipesCommand.php

@@ -55,7 +55,7 @@ protected function configure()
         ;
     }
 
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $installedRepo = $this->getComposer()->getRepositoryManager()->getLocalRepository();
 

src/Command/UnpackCommand.php

@@ -49,7 +49,7 @@ protected function configure()
         ;
     }
 
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $composer = $this->getComposer();
         $packages = $this->resolver->resolve($input->getArgument('packages'), true);