Bump version to node.js 16

[DmitriyBobrovskiy]

Hi,
Because of your action I'm getting this warning in my workflow:

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: microsoft/variable-substitution

[rajbos]

I ran into the same issue, and have forked the action in the meantime. You can find and use v1.1 from here: github.com/rajbos-actions/variable-substitution if this is blocking.

[PavanMudigondaTR]