Bump org.jetbrains.dokka from 1.9.10 to 1.9.20

Bumps org.jetbrains.dokka from 1.9.10 to 1.9.20.

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

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

build.gradle.kts

@@ -8,7 +8,7 @@ plugins {
     kotlin("multiplatform") version "1.9.23"
     id("com.android.library") version "7.4.2"
 
-    id("org.jetbrains.dokka") version "1.9.10"
+    id("org.jetbrains.dokka") version "1.9.20"
 
     id("com.diffplug.spotless") version "6.24.0"