core: bump kotlin from 2.2.21 to 2.3.0 in /core

Bumps `kotlin` from 2.2.21 to 2.3.0.

Updates `org.jetbrains.kotlin:kotlin-stdlib` 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-reflect` 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` 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.jvm` 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.serialization` 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: org.jetbrains.kotlin:kotlin-stdlib
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.jetbrains.kotlin:kotlin-reflect
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.jetbrains.kotlin:kotlin-test
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.jetbrains.kotlin.jvm
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.jetbrains.kotlin.plugin.serialization
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

core/gradle/libs.versions.toml

@@ -14,7 +14,7 @@
 #  - CC Attribution
 
 [versions]
-kotlin = '2.2.21'
+kotlin = '2.3.0'
 ksp = '2.3.3'
 kotlinx-coroutines = '1.10.+'
 logback = '1.5.+'