Update discussion templates for 4.0.x GA

Author: michaelklishin

.github/DISCUSSION_TEMPLATE/other.yml

@@ -23,11 +23,10 @@ body:
     attributes:
       label: RabbitMQ version used
       options:
+        - 4.0.2
         - 3.13.7
         - 3.13.6
-        - 3.13.5
-        - 4.0.0-rc.1
-        - Older (out of support without a commercial license)
+        - 3.12.x or older
     validations:
       required: true
   - type: dropdown

.github/DISCUSSION_TEMPLATE/questions.yml

@@ -27,10 +27,9 @@ body:
     attributes:
       label: RabbitMQ version used
       options:
+        - 4.0.2
         - 3.13.7
         - 3.13.6
-        - 3.13.5
-        - 4.0.0-rc.1
         - 3.12.x or older
     validations:
       required: true