Upgrade integration tests to use Node.js 16

[decentral1se]

https://github.com/ssbc/go-ssb/actions/runs/3299140161

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/setup-node, actions/setup-go, actions/checkout, actions/checkout

Need to update the package.json files in ./message/legacy & ./tests and create new lock files for npm ci ....

Also update the GH actions confniguration.

One for after #170.