Un-mute test

Failures werer likeley due to slow CI workers.
Relates to #37889

buildSrc/src/test/java/org/elasticsearch/gradle/BuildExamplePluginsIT.java

@@ -23,7 +23,6 @@ import org.apache.commons.io.FileUtils;
 import org.elasticsearch.gradle.test.GradleIntegrationTestCase;
 import org.gradle.testkit.runner.GradleRunner;
 import org.junit.BeforeClass;
-import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.rules.TemporaryFolder;
 
@@ -39,7 +38,6 @@ import java.util.List;
 import java.util.Objects;
 import java.util.stream.Collectors;
 
-@Ignore // Awaiting a fix in https://github.com/elastic/elasticsearch/issues/37889.
 public class BuildExamplePluginsIT extends GradleIntegrationTestCase {
 
     private static final List<File> EXAMPLE_PLUGINS = Collections.unmodifiableList(