Suggestion: Leveraging Cache for Golang modules in GitHub Actions jobs

[karuppiah7890]

This will help speedup the job

[itaysk]

thanks for the suggestion. if you want to add that it would be great

[karuppiah7890]

Sure, I'll try :) I'm already trying that out in a PR to speedup builds. But it didn't exactly seem to help though (build time remained the same and modules got downloaded again). Gotta check why.