Bump the gradle group across 1 directory with 5 updates (#150)

Bumps the gradle group with 5 updates in the /agents/agent-koog directory:

| Package | From | To |
| --- | --- | --- |
| [plugin.serialization](https://github.com/JetBrains/kotlin) | `2.2.0` | `2.3.0` |
| [org.jetbrains.kotlin:kotlin-test](https://github.com/JetBrains/kotlin) | `2.2.21` | `2.3.0` |
| [org.jetbrains.kotlin:kotlin-test-junit](https://github.com/JetBrains/kotlin) | `2.2.21` | `2.3.0` |
| [org.jetbrains.kotlin.plugin.compose](https://github.com/JetBrains/kotlin) | `2.2.21` | `2.3.0` |
| [org.jetbrains.kotlin.multiplatform](https://github.com/JetBrains/kotlin) | `2.2.21` | `2.3.0` |



Updates `plugin.serialization` from 2.2.0 to 2.3.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.0...v2.3.0)

Updates `org.jetbrains.kotlin:kotlin-test` from 2.2.21 to 2.3.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.21...v2.3.0)

Updates `org.jetbrains.kotlin:kotlin-test-junit` from 2.2.21 to 2.3.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.21...v2.3.0)

Updates `org.jetbrains.kotlin.plugin.compose` from 2.2.21 to 2.3.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.21...v2.3.0)

Updates `org.jetbrains.kotlin.multiplatform` from 2.2.21 to 2.3.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.21...v2.3.0)

Updates `org.jetbrains.kotlin:kotlin-test-junit` from 2.2.21 to 2.3.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.21...v2.3.0)

Updates `org.jetbrains.kotlin.plugin.compose` from 2.2.21 to 2.3.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.21...v2.3.0)

Updates `org.jetbrains.kotlin.multiplatform` from 2.2.21 to 2.3.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.2.21...v2.3.0)

---
updated-dependencies:
- dependency-name: plugin.serialization
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle
- dependency-name: org.jetbrains.kotlin:kotlin-test
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle
- dependency-name: org.jetbrains.kotlin:kotlin-test-junit
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle
- dependency-name: org.jetbrains.kotlin.plugin.compose
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle
- dependency-name: org.jetbrains.kotlin.multiplatform
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle
- dependency-name: org.jetbrains.kotlin:kotlin-test-junit
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle
- dependency-name: org.jetbrains.kotlin.plugin.compose
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle
- dependency-name: org.jetbrains.kotlin.multiplatform
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

agents/agent-koog/composeApp/build.gradle.kts

@@ -8,7 +8,7 @@ plugins {
     alias(libs.plugins.composeCompiler)
 
     // Add Kotlin serialization plugin for Koog API support
-    kotlin("plugin.serialization") version "2.2.0"
+    kotlin("plugin.serialization") version "2.3.0"
 }
 
 kotlin {

agents/agent-koog/gradle/libs.versions.toml

@@ -12,7 +12,7 @@ androidx-testExt = "1.3.0"
 composeMultiplatform = "1.9.3"
 junit = "4.13.2"
 koogAgents = "0.5.4"
-kotlin = "2.2.21"
+kotlin = "2.3.0"
 logbackAndroid = "3.0.0"
 materialIconsCore = "1.7.8"
 opentelemetryExporterOtlp = "1.57.0"