Bump io.netty:netty-handler-proxy from 4.2.5.Final to 4.2.6.Final (#471)

Bumps [io.netty:netty-handler-proxy](https://github.com/netty/netty) from 4.2.5.Final to 4.2.6.Final.
- [Commits](netty/netty@netty-4.2.5.Final...netty-4.2.6.Final)

---
updated-dependencies:
- dependency-name: io.netty:netty-handler-proxy
  dependency-version: 4.2.6.Final
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

build.gradle

@@ -103,13 +103,13 @@ dependencies {
     includeInJar("net.raphimc.netminecraft:all:3.1.3-SNAPSHOT") {
         exclude group: "com.google.code.gson", module: "gson"
     }
-    includeInJar("io.netty:netty-codec-haproxy:4.2.5.Final") {
+    includeInJar("io.netty:netty-codec-haproxy:4.2.6.Final") {
         transitive = false
     }
-    includeInJar("io.netty:netty-handler-proxy:4.2.5.Final") {
+    includeInJar("io.netty:netty-handler-proxy:4.2.6.Final") {
         transitive = false
     }
-    includeInJar("io.netty:netty-codec-socks:4.2.5.Final") {
+    includeInJar("io.netty:netty-codec-socks:4.2.6.Final") {
         transitive = false
     }
     includeInJar("net.raphimc:MinecraftAuth:4.1.1") {