Use JDK 17 for Dokka publication on CI

[twyatt]

Dokka publication is failing, this should fix it. 🤞

* What went wrong:
An exception occurred applying plugin request [id: 'com.android.library', artifact: 'com.android.tools.build:gradle:null']
> Failed to apply plugin 'com.android.internal.library'.
   > Android Gradle plugin requires Java 17 to run. You are currently using Java 11.
      Your current JDK is located in /usr/lib/jvm/temurin-11-jdk-amd64
      You can try some of the following options:
       - changing the IDE settings.
       - changing the JAVA_HOME environment variable.
       - changing `org.gradle.java.home` in `gradle.properties`.

[github-actions[bot]]

Test Results

  5 files  ±0    5 suites  ±0   28s :stopwatch: -12s 17 tests ±0  17 :heavy_check_mark: ±0  0 :zzz: ±0  0 :x: ±0  19 runs  ±0  19 :heavy_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit cf6d726e. ± Comparison against base commit 333c1923.