Move from node 12 to node 16

[andypols]

Using this action is now causing deprecation warnings.

https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/

[MishaKav]

@andypols Thanks for letting me know. I fixed it and release new version that fix this warning, you can use:

- name: Pytest Coverage Comment
  uses: MishaKav/pytest-coverage-comment@main

or use a specific version

- name: Pytest Coverage Comment
  uses: MishaKav/pytest-coverage-comment@v1.1.36

[andypols]

@MishaKav Awesome - thanks