feat(tasks:check_for_updates): add env variable to disable checking

app/apps/common/tasks.py

@@ -90,6 +90,9 @@ def reset_demo_data(timestamp=None):
     name="check_for_updates",
 )
 def check_for_updates(timestamp=None):
+    if not settings.CHECK_FOR_UPDATES:
+        return "CHECK_FOR_UPDATES is disabled"
+
     url = "https://api.github.com/repos/eitchtee/WYGIWYH/releases/latest"
 
     try: