Bump netty-all from 4.1.16.Final to 4.1.42.Final (#3391)

Bumps [netty-all](https://github.com/netty/netty) from 4.1.16.Final to 4.1.42.Final.
- [Release notes](https://github.com/netty/netty/releases)
- [Commits](https://github.com/netty/netty/compare/netty-4.1.16.Final...netty-4.1.42.Final)
Signed-off-by: Ndependabot[bot] <support@github.com>

pom.xml

@@ -61,7 +61,7 @@
         <groovy.version>2.4.5</groovy.version>
         <snakeyaml.version>1.16</snakeyaml.version>
         
-        <netty.version>4.1.16.Final</netty.version>
+        <netty.version>4.1.42.Final</netty.version>
         <commons-codec.version>1.10</commons-codec.version>
         <commons-collections4.version>4.2</commons-collections4.version>