node@12 has been deprecated warnings

[jkremser]

The GH actions that use node12 produce these warnings in our pipeline:

Node.js 12 actions are deprecated. For more information see: https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/. Please update the following actions to use Node.js 16: actions/checkout, actions/setup-go, anchore/sbom-action, docker/login-action, docker/login-action, docker/login-action, docker/login-action, actions/checkout

Also similarly set-output was deprecated and this should be used instead: https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-an-environment-variable

[jkremser]

partially done in fe41d04

[jkremser]

sharing the data between jobs should be done using GITHUB_OUTPUT : https://docs.github.com/en/actions/using-jobs/defining-outputs-for-jobs