Bump version to 4.2beta.6

advanced/esphome/nspanel_esphome_prebuilt.yaml

@@ -61,7 +61,6 @@ script:
           static const char *const TAG = "prebuilt.script.watchdog";
           ESP_LOGI(TAG, "Pre-built version: ${pre_built}");
 
-
 select:
   - id: !extend tft_file_model
     platform: template
@@ -77,6 +76,7 @@ select:
 
 web_server:
   id: web_server_std
+  #ota: true  # Not available for ESP-IDF
 
 wifi:
   ap: {}