Description:
It would be useful to utilize the .tool-versions file to set the expect version of Go for the action runtime in addition to being able to set via the parameters.

Justification:
Because an action may be used across a variety of steps, it can be burdensome to track the Go version via the parameter in every place used. Several other setup-<lang> projects are also utilizing or making progress towards using the .tool-versions file for version locking.

• Ruby currently utilizes
• Python has a PR open to add this functionality
• Node uses it

Are you willing to submit a PR?
💯 if this feels like a thing that would be useful to the community and in keeping with the goal of this project.