Correct Mastodon IOT class (#125511)

* Correct iot class

* Fix hassfest

homeassistant/components/mastodon/manifest.json

@@ -5,7 +5,7 @@
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/mastodon",
   "integration_type": "service",
-  "iot_class": "cloud_push",
+  "iot_class": "cloud_polling",
   "loggers": ["mastodon"],
   "requirements": ["Mastodon.py==1.8.1"]
 }

homeassistant/generated/integrations.json

@@ -3512,7 +3512,7 @@
       "name": "Mastodon",
       "integration_type": "service",
       "config_flow": true,
-      "iot_class": "cloud_push"
+      "iot_class": "cloud_polling"
     },
     "matrix": {
       "name": "Matrix",