HADOOP-17614. Bump netty to the latest 4.1.61. (#2871)

hadoop-project/pom.xml

@@ -788,7 +788,7 @@
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-all</artifactId>
-        <version>4.1.48.Final</version>
+        <version>4.1.61.Final</version>
       </dependency>
 
       <dependency>