Update pom.xml

pom.xml

@@ -26,7 +26,7 @@
         <r2dbc.version>Arabba-SR7</r2dbc.version>
         <vertx.version>3.8.5</vertx.version>
         <netty.version>4.1.51.Final</netty.version>
-        <elasticsearch.version>7.11.2</elasticsearch.version>
+        <elasticsearch.version>7.9.2</elasticsearch.version>
         <reactor.excel.version>1.0.0</reactor.excel.version>
         <reactor.ql.version>1.0.9</reactor.ql.version>
         <fastjson.version>1.2.70</fastjson.version>
@@ -431,4 +431,4 @@
             <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
         </pluginRepository>
     </pluginRepositories>
-</project>
+</project>