Discussions: modify [Question] template

Too many people check the box that says they
have read the community support policy but they
haven't actually read anything because
they expect support for RabbitMQ 3.13 and earlier
3.x versions without having a support license
or being regular contributors.

Author: michaelklishin

.github/DISCUSSION_TEMPLATE/questions.yml

@@ -16,7 +16,9 @@ body:
       options:
         - label: I have read [RabbitMQ's Community Support Policy](https://github.com/rabbitmq/rabbitmq-server/blob/main/COMMUNITY_SUPPORT.md)
           required: true
-        - label: I agree to provide all relevant information (versions, logs, rabbitmq-diagnostics output, detailed reproduction steps)
+        - label: I run RabbitMQ 4.x, the series covered by [community support](https://github.com/rabbitmq/rabbitmq-server/blob/main/COMMUNITY_SUPPORT.md)
+          required: true
+        - label: I promise to provide all relevant information (versions, logs from all nodes, rabbitmq-diagnostics output, detailed reproduction steps)
           required: true
   - type: markdown
     attributes:
@@ -27,8 +29,8 @@ body:
     attributes:
       label: RabbitMQ version used
       options:
+        - 4.0.4
         - 4.0.3
-        - 3.13.7 or older
     validations:
       required: true
   - type: dropdown