chore: add 3.8.0, remove 3.4.1, 3.6.1, 3.6.2

Author: NickLarsenNZ

docs/modules/kafka/partials/supported-versions.adoc

@@ -2,7 +2,5 @@
 // This is a separate file, since it is used by both the direct Kafka documentation, and the overarching
 // Stackable Platform documentation.
 
+- 3.8.0
 - 3.7.1 (LTS)
-- 3.6.2 (deprecated)
-- 3.6.1 (deprecated)
-- 3.4.1 (deprecated)

tests/test-definition.yaml

@@ -6,10 +6,8 @@
 dimensions:
   - name: kafka
     values:
-      - 3.4.1
-      - 3.6.1
-      - 3.6.2
       - 3.7.1
+      - 3.8.0
   - name: kafka-latest
     values:
       - 3.7.1
@@ -21,11 +19,10 @@ dimensions:
       - 3.9.2
   - name: upgrade_old
     values:
-      - 3.4.1
-      - 3.6.1
+      - 3.7.1
   - name: upgrade_new
     values:
-      - 3.7.1
+      - 3.8.0
   - name: use-client-tls
     values:
       - "true"