Bump org.jetbrains.dokka from 1.9.10 to 1.9.20 (tmio#75)

Bumps [org.jetbrains.dokka](https://github.com/Kotlin/dokka) from 1.9.10 to 1.9.20.
- [Release notes](https://github.com/Kotlin/dokka/releases)
- [Commits](Kotlin/dokka@v1.9.10...v1.9.20)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Antoine Toulme <[email protected]>

build.gradle

@@ -33,7 +33,7 @@ plugins {
   id 'org.gradle.crypto.checksum' version '1.4.0'
   id 'org.jetbrains.kotlin.jvm' version '1.9.23'
   id 'org.jetbrains.kotlin.plugin.spring' version '1.9.23'
-  id 'org.jetbrains.dokka' version '1.9.10'
+  id 'org.jetbrains.dokka' version '1.9.20'
   id 'maven-publish'
   id 'se.patrikerdes.use-latest-versions' version '0.2.18'
   id 'com.github.ben-manes.versions' version '0.49.0'