Warning on runs due to Github actions deprecating Node12

[elsewhat]

When running the action now, Github provides a warning The following actions uses node12 which is deprecated and will be forced to run on node16: anthonyvscode/newman-action@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

Assume the solution is to bump the runs: section to node16 and test https://github.com/anthonyvscode/newman-action/blob/2667a18c6a7f1bc68c7aae5d5945a39b44944d89/action.yml#L90