[MINOR] Print the go version on each CI build.

MERGE REQUEST

MR Guidelines

Overview

The goal of the MR is to add more information to our builds.

CI builds might suddenly stop working for seemingly no reason. The actual cause might be a change in the version of Go used for the build. We usually are able to check that retroactively but apparently that's not always the case - the golang images used for these two builds are no longer available on Docker Hub, making it impossible to know which version of go was actually used: https://gitlab.com/NebulousLabs/Sia/-/jobs/664513559, https://gitlab.com/NebulousLabs/Sia/-/jobs/693195334.

Example for Visual Changes

Checklist

Review and complete the checklist to ensure that the MR is complete before assigned to an approver.

• All new methods or updated methods have clear docstrings
• Testing added or updated for new methods
• Any new packages are added to Makefile and .gitlab-ci.yml
• API documentation updated for API updates
• Module README.md updated for changes to workflow
• Issue added to Sia-UI repo for new supporting features
• Changelog File Created

Issues Closed