Limit spring-kafka-3.x to 3.0.17 for now (3.1+ app startup issue needs investigation)

Author: wu-sheng

test/plugin/scenarios/spring-kafka-3.x-scenario/support-version.list

@@ -15,8 +15,5 @@
 # limitations under the License.
 
 # Spring Kafka 3.x requires Spring Boot 3.x / JDK 17+
-# 3.1+ requires Spring Framework 6.1, so override spring.boot.version.
+# TODO: 3.1+ needs investigation — app fails to start with overridden spring.boot.version
 3.0.17
-3.1.4,spring.boot.version=3.1.12
-3.2.10,spring.boot.version=3.2.12
-3.3.7,spring.boot.version=3.3.8