Update bug_report.yml

Author: eregon

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -3,7 +3,11 @@ description: Create a report to help us improve
 body:
 - type: markdown
   attributes:
-    value: Please note we will close your issue without comment if you do not fill out the requested information.
+    value: |
+      First, take some time to think whether this is really an issue of ruby/setup-ruby and whether it is fixable in this action.
+      Give some thoughts whether it could be an issue in your workflow, in the gems you use, in GitHub Actions, in Ruby, RubyGems, Bundler, etc.
+      This is NOT the place to ask help about your workflow failing, it is only to report issues about ruby/setup-ruby.
+      Please note we will close your issue without comment if you do not fill out the requested information.
 - type: checkboxes
   attributes:
     label: Ensure the following before filing this issue