enable bedrock knowledge base test case in v2

Author: yiyuan-he

appsignals-tests/contract-tests/src/test/java/software/amazon/opentelemetry/appsignals/test/awssdk/v2/AwsSdkV2Test.java

@@ -261,8 +261,8 @@ void testBedrockAgentRuntimeAgentId() {
 
   // TODO: Enable testBedrockAgentRuntimeKnowledgeBaseId test after KnowledgeBaseId is supported in
   // OTEL BedrockAgentRuntime instrumentation
-  //  @Test
-  //  void testBedrockAgentRuntimeKnowledgeBaseId() {
-  //    doTestBedrockAgentRuntimeKnowledgeBaseId();
-  //  }
+  @Test
+  void testBedrockAgentRuntimeKnowledgeBaseId() {
+    doTestBedrockAgentRuntimeKnowledgeBaseId();
+  }
 }