bump select activity card template version to 1.0.8

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/utils/xbot_utils.py

@@ -425,7 +425,7 @@ def send_select_activity_card_message(message_id):
         "type": "template",
         "data": {
             "template_id": "AAqR6hyJFojEs",
-            "template_version_name": "1.0.6",
+            "template_version_name": "1.0.8",
             "template_variable": {"activity_list": activity_data},
         },
     }