Update CI actions to node 16

[traumschule]

Noticed this warning for test (14.x, ubuntu-latest)

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@v2, actions/setup-node@v2

Requires update of actions defined in 5b6529f

[mnaamani]

Addressed in #4778