[skip ci] Update discussion template versions

Author: lukebakken

.github/DISCUSSION_TEMPLATE/questions.yml

@@ -29,7 +29,15 @@ body:
   attributes:
     label: RabbitMQ version used
     options:
-    - null
+    - 4.2.1
+    - 4.2.0
+    - 4.1.6
+    - 4.1.5
+    - 4.1.4
+    - 4.1.3
+    - 4.1.2
+    - 4.1.1
+    - 4.1.0
     - other (please specify)
   validations:
     required: true
@@ -38,7 +46,17 @@ body:
   attributes:
     label: Erlang version used
     options:
-    - null
+    - 28.3.x
+    - 28.2.x
+    - 28.1.x
+    - 28.0.x
+    - 27.3.x
+    - 27.2.x
+    - 27.1.x
+    - 27.0.x
+    - 26.2.x
+    - 26.1.x
+    - 26.0.x
     - other (please specify)
   validations:
     required: true

.github/versions.json

@@ -1,8 +1,26 @@
 {
   "rabbitmq": [
-    ""
+    "4.2.1",
+    "4.2.0",
+    "4.1.6",
+    "4.1.5",
+    "4.1.4",
+    "4.1.3",
+    "4.1.2",
+    "4.1.1",
+    "4.1.0"
   ],
   "erlang": [
-    ""
+    "28.3.x",
+    "28.2.x",
+    "28.1.x",
+    "28.0.x",
+    "27.3.x",
+    "27.2.x",
+    "27.1.x",
+    "27.0.x",
+    "26.2.x",
+    "26.1.x",
+    "26.0.x"
   ]
 }