Bump io.netty:netty-all from 4.1.107.Final to 4.1.115.Final in /plugins

Bumps [io.netty:netty-all](https://github.com/netty/netty) from 4.1.107.Final to 4.1.115.Final.
- [Commits](netty/netty@netty-4.1.107.Final...netty-4.1.115.Final)

---
updated-dependencies:
- dependency-name: io.netty:netty-all
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

plugins/endpoints/build.gradle

@@ -7,7 +7,7 @@ plugins {
 dependencies {
     implementation "com.google.code.gson:gson:${gson_version}"
     implementation "org.pytorch:torchserve-plugins-sdk:${torchserve_sdk_version}"
-    implementation "io.netty:netty-all:4.1.107.Final"
+    implementation "io.netty:netty-all:4.1.115.Final"
 }
 
 project.ext{