Bump org-jetbrains-kotlin from 2.3.21 to 2.4.0

Bumps `org-jetbrains-kotlin` from 2.3.21 to 2.4.0.

Updates `org.jetbrains.kotlin:kotlin-bom` from 2.3.21 to 2.4.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.3.21...v2.4.0)

Updates `org.jetbrains.kotlin:kotlin-gradle-plugin` from 2.3.21 to 2.4.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.3.21...v2.4.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-bom
  dependency-version: 2.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-version: 2.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -10,7 +10,7 @@ org-aspectj = "1.9.25.1"
 org-bouncycastle = "1.84"
 org-eclipse-jetty = "11.0.26"
 org-jetbrains-dokka = "2.2.0"
-org-jetbrains-kotlin = "2.3.21"
+org-jetbrains-kotlin = "2.4.0"
 org-jetbrains-kotlinx = "1.11.0"
 org-mockito = "5.23.0"
 org-opensaml5 = "5.2.2"