Bump org.jetbrains.dokka from 1.9.10 to 1.9.20 (#268)

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>

build.gradle.kts

@@ -6,7 +6,7 @@ plugins {
     `maven-publish`
 
     id("org.jmailen.kotlinter") version "4.2.0"
-    id("org.jetbrains.dokka") version "1.9.10"
+    id("org.jetbrains.dokka") version "1.9.20"
 }
 
 group = "com.lapanthere"