repo: workflows use node 16 everywhere

[shpingalet007]

Standards checklist:

• The PR title is descriptive.
• The PR doesn't replicate another PR which is already open.
• The PR has self-explained commits history.
• The workflow changes are stable, and I have tested them myself on the fork repository, to the best of my abilities.

Changes:

• Update actions/setup-node to v3
• Use node 16 everywhere

Other comments:

This PR is related to #873. Node 16 is mandatory for node-gyp to compile binary raw-socket node module.

Changes introduced in this PR could not break current workflow and are backward compatible.

[shpingalet007]

Tests of deploy.pulls.dev.yml (6/7 checked)

- Check results - | - Workflow code -

• deploy-pre
• deploy-test
• build-proxy (skipped, no access to proxy_pull_up.sh script)
• build-app-macos
• build-app-unix
• build-app-windows
• build-app-android

[shpingalet007]

After-merge report 1

• Night test deploy (night.test.bastyon.com.yml) | Check results (5/5)
• Night combat deploy (night.bastyon.com.yml) | Check results (5/5)
• Pull requests deploy (night.bastyon.com.yml) | Check results (5/7)

[shpingalet007]

After-merge report 2

• Pull requests deploy (night.bastyon.com.yml) | Check results (7/7)