Increase timeout for slow CCS search tests (elastic#139583)

Bump the timeout from 20 to 30mins

Author: davidkyle

muted-tests.yml

@@ -469,9 +469,6 @@ tests:
 - class: org.elasticsearch.xpack.logsdb.RandomizedRollingUpgradeIT
   method: testIndexingSyntheticSource
   issue: https://github.com/elastic/elasticsearch/issues/139482
-- class: org.elasticsearch.test.rest.yaml.CssSearchYamlTestSuiteIT
-  method: test {p0=search/500_date_range/test range query for all docs with year uuuu}
-  issue: https://github.com/elastic/elasticsearch/issues/139534
 - class: org.elasticsearch.repositories.gcs.GoogleCloudStorageBlobStoreRepositoryTests
   method: testMultipleSnapshotAndRollback
   issue: https://github.com/elastic/elasticsearch/issues/139556

qa/ccs-common-rest/src/yamlRestTest/java/org/elasticsearch/test/rest/yaml/CssSearchYamlTestSuiteIT.java

@@ -9,11 +9,16 @@
 
 package org.elasticsearch.test.rest.yaml;
 
+import com.carrotsearch.randomizedtesting.annotations.TimeoutSuite;
+
+import org.apache.lucene.tests.util.TimeUnits;
+
 import java.io.IOException;
 
 /**
  * Runs the search and msearch API tests only. See {@link TestSuiteApiCheck}
  */
+@TimeoutSuite(millis = 30 * TimeUnits.MINUTE) // to account for slow encryption at rest tests
 public class CssSearchYamlTestSuiteIT extends CcsCommonYamlTestSuiteIT {
     public CssSearchYamlTestSuiteIT(ClientYamlTestCandidate testCandidate) throws IOException {
         super(testCandidate);