Update bug_report.yaml

.github/ISSUE_TEMPLATE/bug_report.yaml

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+        > [!IMPORTANT]
+        > Do not open an issue if you're getting a "Deserialised application settings is null!" error. This issue is caused by a server error on Roblox's end. 
+        > Wait for the problem to be resolved, and do not report an issue for it.
         ### **Preliminary instructions**
         - Before opening an issue, please [check the Wiki first](https://github.com/pizzaboxer/bloxstrap/wiki/) to see if your problem has been addressed there.
           - If it isn't, please confirm which pages that you read that were relevant to your issue.