MINOR: Bump io.netty:netty-bom from 4.1.119.Final to 4.2.7.Final (#887)

Bumps [io.netty:netty-bom](https://github.com/netty/netty) from
4.1.119.Final to 4.2.7.Final.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/netty/netty/commit/511cbacea64c3348078948e8cb424749afeaeefc"><code>511cbac</code></a>
[maven-release-plugin] prepare release netty-4.2.7.Final</li>
<li><a
href="https://github.com/netty/netty/commit/bf1cad6920d65d1a2eac2b0d2efbb58cfcc04cf4"><code>bf1cad6</code></a>
Adjust plugin config to not publish testsuite artifacts</li>
<li><a
href="https://github.com/netty/netty/commit/690f56f205ce6921e69bcb240939e633b31799b9"><code>690f56f</code></a>
[maven-release-plugin] rollback the release of netty-4.2.7.Final</li>
<li><a
href="https://github.com/netty/netty/commit/63b523210bd63c7010c44ef31fd89833a1710746"><code>63b5232</code></a>
[maven-release-plugin] prepare for next development iteration</li>
<li><a
href="https://github.com/netty/netty/commit/9f99dfd9bade906ed000d757905be6f8fabce44c"><code>9f99dfd</code></a>
[maven-release-plugin] prepare release netty-4.2.7.Final</li>
<li><a
href="https://github.com/netty/netty/commit/551c32aa8caedc552a8dfb5f535b0ad694a60503"><code>551c32a</code></a>
Upgrade publishing plugin</li>
<li><a
href="https://github.com/netty/netty/commit/a6660fe54fedc4cc420da710fea9b8bb052c3bcc"><code>a6660fe</code></a>
[maven-release-plugin] rollback the release of netty-4.2.7.Final</li>
<li><a
href="https://github.com/netty/netty/commit/297b7c1dcced0382d40e61495f6295eb01a2a272"><code>297b7c1</code></a>
[maven-release-plugin] prepare for next development iteration</li>
<li><a
href="https://github.com/netty/netty/commit/2c89a17886bf2615d98ca6402bc58df61c28babb"><code>2c89a17</code></a>
[maven-release-plugin] prepare release netty-4.2.7.Final</li>
<li><a
href="https://github.com/netty/netty/commit/1782e8c2060a244c4d4e6f9d9112d5517ca05120"><code>1782e8c</code></a>
Merge commit from fork</li>
<li>Additional commits viewable in <a
href="https://github.com/netty/netty/compare/netty-4.1.119.Final...netty-4.2.7.Final">compare
view</a></li>
</ul>
</details>
<br />


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pom.xml

@@ -97,7 +97,7 @@ under the License.
     <dep.junit.jupiter.version>5.12.2</dep.junit.jupiter.version>
     <dep.slf4j.version>2.0.17</dep.slf4j.version>
     <dep.guava-bom.version>33.4.8-jre</dep.guava-bom.version>
-    <dep.netty-bom.version>4.1.127.Final</dep.netty-bom.version>
+    <dep.netty-bom.version>4.2.9.Final</dep.netty-bom.version>
     <dep.grpc-bom.version>1.73.0</dep.grpc-bom.version>
     <dep.protobuf-bom.version>4.33.1</dep.protobuf-bom.version>
     <dep.jackson-bom.version>2.18.3</dep.jackson-bom.version>