deps: downgrade Netty due to incompatibility with grpc-java (#19755)

## Description

Netty 4.1.111.Final is incompatible with grpc-java < 1.65.0 and >=
1.51.0. It can introduce buffer corruption at any point, which if you're
lucky is detected, but may also go unnoticed and result in garbage and
waste of time.

Wait until grpc-java releases a compatible version before updating to
4.1.111.Final. Note that this also blocks Spring Boot 3.3.1 which
depends on Netty 4.1.111.Final.

See:

- grpc/grpc-java#11284 (comment)
- https://github.com/grpc/grpc-java/releases/tag/v1.64.0

## Related issues

blocks #19581
blocks #19265
blocks #19264
blocks #19259
blocks #19258

.github/renovate.json

@@ -70,6 +70,11 @@
       "matchPackagePrefixes": ["org.jacoco"],
       "allowedVersions": "!/0.8.9/"
     },
+    {
+      "matchManagers": ["maven"],
+      "matchPackagePrefixes": ["io.netty"],
+      "allowedVersions": "<=4.1.110.Final"
+    },
     {
       "description" : "Exclude SNAPSHOT versions, renovate may suggest them for pre-release values.",
       "matchManagers": ["maven"],

parent/pom.xml

@@ -72,7 +72,7 @@
     <version.mockito>5.12.0</version.mockito>
     <version.model>7.7.0</version.model>
     <version.msgpack>0.9.8</version.msgpack>
-    <version.netty>4.1.111.Final</version.netty>
+    <version.netty>4.1.110.Final</version.netty>
     <version.objenesis>3.4</version.objenesis>
     <version.opensearch>2.8.0</version.opensearch>
     <version.opensearch.testcontainers>2.0.1</version.opensearch.testcontainers>