integration test runner xmx (#11273)

* integration test runner xmx

* smaller
diff --git a/integration-tests/pom.xml b/integration-tests/pom.xml
index edabb27..dc58ee5 100644
--- a/integration-tests/pom.xml
+++ b/integration-tests/pom.xml
@@ -540,6 +540,7 @@
                                 </property>
                             </properties>
                             <argLine>
+                                -Xmx64m
                                 -Duser.timezone=UTC
                                 -Dfile.encoding=UTF-8
                                 -Ddruid.test.config.dockerIp=${env.DOCKER_IP}