Bump dokka-maven-plugin from 0.10.1 to 1.4.20 (#68)

Bumps [dokka-maven-plugin](https://github.com/Kotlin/dokka) from 0.10.1 to 1.4.20.
- [Release notes](https://github.com/Kotlin/dokka/releases)
- [Commits](Kotlin/dokka@0.10.1...v1.4.20)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

pom.xml

@@ -180,7 +180,7 @@
                     <plugin>
                         <groupId>org.jetbrains.dokka</groupId>
                         <artifactId>dokka-maven-plugin</artifactId>
-                        <version>0.10.1</version>
+                        <version>1.4.20</version>
                         <executions>
                             <execution>
                                 <phase>package</phase>