fix(deps): update datastore/tutorial to symfony/console to v5 (GoogleCloudPlatform#1415)

Author: bshaffer

datastore/tutorial/composer.json

@@ -1,7 +1,7 @@
 {
     "require": {
         "google/cloud-datastore": "^1.2",
-        "symfony/console": "^3.0"
+        "symfony/console": "^5.0"
     },
     "autoload": {
         "psr-4": { "Google\\Cloud\\Samples\\Datastore\\Tasks\\": "src" },

datastore/tutorial/src/CreateTaskCommand.php

@@ -63,5 +63,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 'Created new task with ID %d.', $task->key()->pathEnd()['id']
             )
         );
+
+        return 0;
     }
 }

datastore/tutorial/src/DeleteTaskCommand.php

@@ -59,5 +59,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $taskId = intval($input->getArgument('taskId'));
         delete_task($datastore, $taskId);
         $output->writeln(sprintf('Task %d deleted successfully.', $taskId));
+
+        return 0;
     }
 }

datastore/tutorial/src/ListTasksCommand.php

@@ -70,5 +70,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
             );
         }
         $table->render();
+
+        return 0;
     }
 }

datastore/tutorial/src/MarkTaskDoneCommand.php

@@ -59,5 +59,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $taskId = intval($input->getArgument('taskId'));
         mark_done($datastore, $taskId);
         $output->writeln(sprintf('Task %d updated successfully.', $taskId));
+
+        return 0;
     }
 }