[Security] Also bump Netty to 4.1.136.Final

The PR vulnerability-scan CI step flags Netty (CVE-2026-55831/55833/56745/59901)
at 4.1.135.Final bundled via netty-bom. Bump netty.version to 4.1.136.Final.

UID2-7571 UID2-7572 UID2-7573 UID2-7574

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: cYKatherine

pom.xml

@@ -63,7 +63,7 @@
         <vertx.version>4.5.21</vertx.version>
         <!-- check micrometer.version vertx-micrometer-metrics consumes before bumping up -->
         <micrometer.version>1.12.2</micrometer.version>
-        <netty.version>4.1.135.Final</netty.version>
+        <netty.version>4.1.136.Final</netty.version>
         <jackson.version>2.21.4</jackson.version>
         <image.version>${project.version}</image.version>
     </properties>