统一mqtt版本

oh-package.json5

@@ -6,7 +6,7 @@
   "description": "",
   "version": "1.0.0",
   "dependencies": {
-    "@ohos/mqtt": "^2.0.19"
+    "@ohos/mqtt": "2.0.6"
   },
   "dynamicDependencies": {}
 }

product/phone/oh-package.json5

@@ -14,7 +14,7 @@
     "@ohos/gesturenavigation": "../../feature/gesturenavigation",
     "@ohos/common": "../../common",
     "@ohos/numbadge": "../../feature/numbadge",
-    "@ohos/mqtt": "^2.0.19",
+    "@ohos/mqtt": "2.0.6",
     "@mcui/mccharts": "^1.0.2",
     "@ohos/axios": "2.2.1-rc.0",
     "@ohos/commons-fileupload": "^1.0.0"