GitHub issue template: Don't require steps to reproduce

We are trying to make the issue template easier to fill out. While steps
to reproduce are often very useful, there are issues which they don't
really apply to, or are not necessary. Lets try to make them not
required and see how it turns out.

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -59,7 +59,7 @@ body:
 
         Please include screenshots (you can drag any image here) where applicable. Redact any sensitive information.
     validations:
-      required: true
+      required: false
   - type: textarea
     attributes:
       label: "System information and logs"