[Task][Before Each Release]: Ensure the Go version used for container builds is the latest available.

[lostluck]

What needs to happen?

Go makes security patch releases of their tooling, so it's good to ensure we're up to date for each release.

This affects container bootloader security, WRT CVEs that are listed when the containers are scanned.

See if https://go.dev/doc/devel/release has a newer release. Go releases a new version every 6 months, but provides minor revision releases for security updates and bug fixes for the last two versions. It's important to be on the latest of these each release.

After creating the update PR, move this task to the next release.

TODO(lostluck): Automate making these updates.

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 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

[kennknowles]

Still at 1.21.1 and putting these instructions into the release guide.