[improve][misc] Add security section to PIP issue template (apache#19803

)

.github/ISSUE_TEMPLATE/pip.yml

@@ -60,6 +60,15 @@ body:
         This should also serve as documentation for any person that is trying to understand or debug the behavior of a certain feature.
     validations:
       required: true
+  - type: textarea
+    attributes:
+      label: Security Considerations
+      description: |
+        A detailed description of the security details that ought to be considered for the PIP. This is most relevant for any new HTTP endpoints, new Pulsar Protocol Commands, and new security features. The goal is to describe details like which role will have permission to perform an action.
+
+        If there is uncertainty for this section, please submit the PIP and request for feedback on the mailing list.
+    validations:
+      required: true
   - type: textarea
     attributes:
       label: Alternatives