Bump org.jetbrains.dokka:dokka-gradle-plugin from 1.9.20 to 2.0.0

Bumps [org.jetbrains.dokka:dokka-gradle-plugin](https://github.com/Kotlin/dokka) from 1.9.20 to 2.0.0.
- [Release notes](https://github.com/Kotlin/dokka/releases)
- [Commits](Kotlin/dokka@v1.9.20...v2.0.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.dokka:dokka-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 gson = "2.11.0"
 kotlin = "2.0.21"
 kotest = "5.9.1"
-dokka = "1.9.20"
+dokka = "2.0.0"
 nexus-publish-gradle-plugin = "1.3.0"
 # The last version compatible with Java 8 is 0.13.2.
 reckon-gradle-plugin = "0.13.2"