fix (vephos_true_airpurifier): quote Trus in model name

Due to yaml interpreting this as a boolean, it needs to be quoted.

Issue #3708

custom_components/tuya_local/devices/vephos_true_airpurifier.yaml

@@ -2,7 +2,7 @@ name: Air purifier
 products:
   - id: mhzbjznygqaqjx8w
     manufacturer: Vephos
-    model: True
+    model: "True"
 entities:
   - entity: fan
     translation_key: fan_with_presets