build: bump JDK 17 to 21#14806
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JDK 17 Premier Support ends September 2026. JDK 21 is the current LTS with Premier Support until 2028. This change updates the CI workflows, build configuration, and reproducible-builds Dockerfile to use JDK 21 (Temurin).
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JDK 17 Premier Support ends September 2026. JDK 21 is the current LTS with Premier Support until 2028.
This PR bumps the JDK from 17 to 21 across the build configuration:
gradle/libs.versions.toml:javaVersionandkotlinJvmTarget17 → 21.github/workflows/android.yml:java-version17 → 21.github/workflows/diffuse.yml:java-version17 → 21reproducible-builds/Dockerfile:openjdk-17-jdk→openjdk-21-jdkI noticed this while maintaining a fork and wanted to propose it for the team's consideration. I have not done a full local build to verify.