fixc typo

pxt.json

@@ -6,7 +6,7 @@
         "device": "*",
         "storyboard": "*",
         "palette": "*",
-        "microsoft-boot-sequence": "github:microsoft/pxt-microsoft-boot-sequence#v0.0.5",
+        "microsoft-boot-sequence": "github:microsoft/pxt-microsoft-boot-sequence#v0.0.6",
         "hw---rpi": "*",
         "arcade-swarm-animation": "github:microsoft/arcade-swarm-animation#v0.0.1"
     },
@@ -19,6 +19,10 @@
         "test.ts"
     ],
     "public": false,
+    "targetVersions": {
+        "target": "1.2.9",
+        "targetId": "arcade"
+    },
     "supportedTargets": [
         "arcade"
     ],