[Task]: Build with newer Java to keep up Gradle plugins and build health (still target Java 8 compatibility for released artifacts)

[kennknowles]

What needs to happen?

Many gradle plugins and toolchains (like spotless, errorprone) are dropping Java 8 support. We still need to allow users of Java 8 to use Beam but we don't need to run Gradle with Java 8.

Issue Priority

Priority: 2 (default / most normal work should be filed as P2)

Issue Components

• Component: Python SDK
• Component: Java SDK
• Component: Go SDK
• Component: Typescript SDK
• Component: IO connector
• Component: Beam YAML
• Component: Beam examples
• Component: Beam playground
• Component: Beam katas
• Component: Website
• Component: Spark Runner
• Component: Flink Runner
• Component: Samza Runner
• Component: Twister2 Runner
• Component: Hazelcast Jet Runner
• Component: Google Cloud Dataflow Runner

[github-actions]

This issue has been marked as stale due to 150 days of inactivity. It will be closed in 30 days if no further activity occurs. If you think that’s incorrect or this issue still needs to be addressed, please simply write any comment. If closed, you can reopen the issue at any time. Thank you for your contributions.

[kennknowles]

This is long-since fixed, huzzah.