test: confirm behavior of GraalVM 25

Author: diegomarquezp

.kokoro/build.sh

@@ -72,6 +72,9 @@ integration)
     ;;
 graalvm)
     # Run Unit and Integration Tests with Native Image
+    curl -s "https://get.sdkman.io" | bash
+    sdk install java 25-graalce
+    java -version
     mvn -B ${INTEGRATION_TEST_ARGS} -ntp -Pnative test
     RETURN_CODE=$?
     ;;