fix: DeployCommand does not fail when no one "Post-Deployment Tasks" failed and failed "Deployment Task" exist

Mage/Command/BuiltIn/DeployCommand.php

@@ -202,7 +202,11 @@ class DeployCommand extends AbstractCommand implements RequiresEnvironment
         if (self::$failedTasks === 0) {
             $exitCode = 0;
         }
-
+        
+        if (self::$deployStatus === self::FAILED) {
+            $exitCode = 1;
+        }
+        
         return $exitCode;
     }