Update Kotlin/Dokka version references to 1.9.20 (#3510)

(cherry picked from commit 7ccc48e)

Update Dokka's references to 1.9.10 (#3210)

(cherry picked from commit 9bbcc21)

Update Dokka's references to 1.9.0

Update Dokka's references to 1.8.20 (#3028)

(cherry picked from commit bb1c151)

Do no render Types tab when there are no types (#2900)

(cherry picked from commit dca5c31)

Change log level to INFO for messages about alpha plugin versions (#2693

)

(cherry picked from commit 8317436)

Update references and documentation to Dokka 1.7.10 (#2567)

Update documentation and examples to Dokka 1.7.0 (#2542)

(cherry picked from commit fc86d21)

Update documentation and examples to Dokka 1.6.21 (#2465)

(cherry picked from commit 52d066c)

Update documentation, examples and test references to 1.6.20 (#2440)

* Update documentation/example/test references to 1.6.20

* Mute Multiplatform0GradleIntegrationTest due to missing KLIB support

* Update gradle and AGP versions to the latest

(cherry picked from commit 48b5918)