Bump netty-all from 4.1.25.Final to 4.1.42.Final (#80)

Bumps [netty-all](https://github.com/netty/netty) from 4.1.25.Final to 4.1.42.Final.
- [Release notes](https://github.com/netty/netty/releases)
- [Commits](netty/netty@netty-4.1.25.Final...netty-4.1.42.Final)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -77,7 +77,7 @@
         <powermock.version>1.6.6</powermock.version>
         <jraft.version>1.3.5</jraft.version>
         <metrics.version>4.0.2</metrics.version>
-        <commons-io.version>2.4</commons-io.version>
+        <commons-io.version>2.7</commons-io.version>
         <jetty.version>[9.4.17.v20190418,9.4.19.v20190610]</jetty.version>
         <rocksdbjni.version>6.4.6</rocksdbjni.version>
         <guava-retrying.version>2.0.0</guava-retrying.version>