Update bug_report.yml

Author: mbrandonw

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -23,8 +23,7 @@ body:
     options:
     - label: If possible, I've reproduced the issue using the `main` branch of this package.
       required: false
-    - label: This issue hasn't been addressed in an [existing GitHub issue](https://github.com/pointfreeco/swift-composable-architecture/issues).
-      required: true
+    - label: This issue hasn't been addressed in an [existing GitHub issue](https://github.com/pointfreeco/swift-composable-architecture/issues) or [discussion](https://github.com/pointfreeco/swift-composable-architecture/discussions).      required: true
 - type: textarea
   attributes:
     label: Expected behavior