vm(qemu): fix hang when qemu terminates early

UTM.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -52,7 +52,7 @@
       "location" : "https://github.com/utmapp/QEMUKit.git",
       "state" : {
         "branch" : "main",
-        "revision" : "74059d2d8d10462523b40828586fe6ecc06d2df2"
+        "revision" : "6ddf970edaacf708aaf4483d153621921cbf737f"
       }
     },
     {