HADOOP-17251. Upgrade netty-all to 4.1.50.Final on branch-2.10. (#2285)

hadoop-project/pom.xml

@@ -716,7 +716,7 @@
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-all</artifactId>
-        <version>4.0.52.Final</version>
+        <version>4.1.50.Final</version>
       </dependency>
 
       <dependency>