Even longer timeout for XPackRestIT (elastic#60812)

This suite is still occasionally failing with a timeout on macOS.
Suggest further increasing this timeout until this suite is broken up.

Relates elastic#58071

Author: DaveCTurner

x-pack/plugin/src/test/java/org/elasticsearch/xpack/test/rest/XPackRestIT.java

@@ -7,7 +7,9 @@
 
 import com.carrotsearch.randomizedtesting.annotations.ParametersFactory;
 
+import com.carrotsearch.randomizedtesting.annotations.TimeoutSuite;
 import org.apache.http.HttpStatus;
+import org.apache.lucene.util.TimeUnits;
 import org.elasticsearch.ElasticsearchException;
 import org.elasticsearch.common.CheckedFunction;
 import org.elasticsearch.common.settings.Settings;
@@ -51,6 +53,8 @@
 import static org.hamcrest.Matchers.hasSize;
 
 /** Runs rest tests against external cluster */
+// TODO: Remove this timeout increase once this test suite is broken up
+@TimeoutSuite(millis = 60 * TimeUnits.MINUTE)
 public class XPackRestIT extends ESClientYamlSuiteTestCase {
     private static final String BASIC_AUTH_VALUE =
             basicAuthHeaderValue("x_pack_rest_user", SecuritySettingsSourceField.TEST_PASSWORD_SECURE_STRING);