Use JDK 17 on CI

[twyatt]

Newer versions of AGP require JDK 17:

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 /Users/runner/hostedtoolcache/Java_Temurin-Hotspot_jdk/11.0.18-10/x64/Contents/Home
      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   45s :stopwatch: +17s 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 2c14b0ef. ± Comparison against base commit 6e414868.