Update netty-all to 4.1.89.Final (#2754)

Updates io.netty:netty-all from 4.1.87.Final to 4.1.89.Final.


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don't change it yourself.

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<details>
<summary>Adjust future updates</summary>

Add this to your `.scala-steward.conf` file to ignore future updates of
this dependency:
```
updates.ignore = [ { groupId = "io.netty", artifactId = "netty-all" } ]
```
Or, add this to slow down future updates of this dependency:
```
dependencyOverrides = [{
  pullRequests = { frequency = "30 days" },
  dependency = { groupId = "io.netty", artifactId = "netty-all" }
}]
```
</details>

labels: library-update

Author: xerial-bot

build.sbt

@@ -691,7 +691,7 @@ lazy val netty =
       name        := "airframe-http-netty",
       description := "Airframe HTTP Netty backend",
       libraryDependencies ++= Seq(
-        "io.netty" % "netty-all" % "4.1.87.Final"
+        "io.netty" % "netty-all" % "4.1.89.Final"
       )
     )
     .dependsOn(http.jvm, rx.jvm)