KAFKA-12389: Upgrade of netty-codec due to CVE-2021-21290

This security vulnerability was found in netty-codec-http, but [caused by netty itself](netty/netty@c735357) and [fixed in 4.1.59.Final](GHSA-5mcr-gq6c-3hq2). So, upgrade the netty version from 4.1.51.Final to 4.1.59.Final.

Author: Lee Dongjin <dongjin@apache.org>

Reviewers: Manikumar Reddy <manikumar.reddy@gmail.com>

Closes #10235 from dongjinleekr/feature/KAFKA-12389

(cherry picked from commit 4b3e3a9)
Signed-off-by: Manikumar Reddy <manikumar.reddy@gmail.com>

gradle/dependencies.gradle

@@ -97,7 +97,7 @@ versions += [
   mavenArtifact: "3.6.3",
   metrics: "2.2.0",
   mockito: "3.3.3",
-  netty: "4.1.50.Final",
+  netty: "4.1.59.Final",
   owaspDepCheckPlugin: "5.3.2.1",
   powermock: "2.0.7",
   reflections: "0.9.12",