Fix missing import

Author: GalLalouche

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/action/EsqlGetQueryRequest.java

@@ -7,6 +7,7 @@
 
 package org.elasticsearch.xpack.esql.action;
 
+import org.elasticsearch.action.ActionRequest;
 import org.elasticsearch.action.ActionRequestValidationException;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;