Bump koog in /examples/demo-compose-app

Bumps `koog` from 0.5.2 to 0.5.4-develop-20251129-0341.

Updates `ai.koog:agents-core` from 0.5.2 to 0.5.4-develop-20251129-0341
- [Release notes](https://github.com/JetBrains/koog/releases)
- [Changelog](https://github.com/JetBrains/koog/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/JetBrains/koog/commits)

Updates `ai.koog:prompt-executor-llms-all` from 0.5.2 to 0.5.4-develop-20251129-0341
- [Release notes](https://github.com/JetBrains/koog/releases)
- [Changelog](https://github.com/JetBrains/koog/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/JetBrains/koog/commits)

---
updated-dependencies:
- dependency-name: ai.koog:agents-core
  dependency-version: 0.5.4-develop-20251129-0341
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: ai.koog:prompt-executor-llms-all
  dependency-version: 0.5.4-develop-20251129-0341
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

examples/demo-compose-app/gradle/libs.versions.toml

@@ -8,7 +8,7 @@ javaVersion = "17"
 jetbrains-lifecycle = "2.9.6"
 jetbrains-navigation = "2.9.1"
 koin-bom = "4.1.1"
-koog = "0.6.0"
+koog = "0.6.0-develop-20251223-0203"
 kotlin = "2.2.21"
 kotlinx-coroutines = "1.10.2"
 kotlinx-datetime = "0.7.1-0.6.x-compat"