Node12 deprecation warning

[kravets-levko]

Hello 👋

I started getting this warning for workflow that uses tisonkun/actions-dco@v1.1:

Node.js 12 actions are deprecated. Please update the following actions to use Node.js 16: tisonkun/actions-dco@v1.1. For more information see: https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/

Screenshot

Looks that the action should be updated to use Node16 to get rid of this warning