Updates GH Actions to avoid using deprecated node

[m1kola]

Updates GH actions to versions which use Node 16.

Currently some of our actions produce the following warning:

Node.js 12 actions are deprecated. Please update the following actions to use Node.js 16: actions/checkout@v2. For more information see: https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/.

The above is due to usage of actions/checkout@v2.

docker/login-action@v1 also seems to have another issue:

The save-state command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

[m1kola]

/cc everettraven anik120

[everettraven]

@m1kola Thanks for taking care of this!

/lgtm