At the moment, in Github Actions, when a job has `uses:
actions/setup-go` it uses a specific commit from that repo.
In that commit, it used `set-output` somewhere, which is now deprecated
and will be disabled within the next month or so.
See here for more information:
https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/
This PR changes every instance where `actions/setup-go@...` was used and
replaces it with release `v2.1.3`. [From the release
notes](https://github.com/actions/setup-go/releases/tag/v2.1.3):
> Updated communication with runner to use environment files rather then
workflow commands
Which is what the above Github blog recommends doing.
---
Addationally, the latest version of this Github Action is
[`v4.0.0`](https://github.com/actions/setup-go/releases/tag/v4.0.0),
which you may want to update to in the future.