Add ref to latest version of the action

[avinash-vllbh]

Github actions require uses syntax to be in the following format - {owner}/{repo}@{ref}.

Without it the workflow syntax is determined to be invalid and will raise the following error expected format {org}/{repo}[/path]@ref.

[avinash-vllbh]

@lastthyme thanks for the approval.

@jasonkarns if it looks good, can you merge this PR?

[jasonkarns]

Can you link to an example that shows this error? This version suffix is supposed to be optional, and is indeed still documented as such.

[jasonkarns]

I've validated that github has changed their behavior regarding omitting action versions. (And I have an open support ticket with them.)

Until then, I would still like to merge this, but it needs to be updated to use main instead of master.

[avinash-vllbh]

I've validated that github has changed their behavior regarding omitting action versions. (And I have an open support ticket with them.)

Until then, I would still like to merge this, but it needs to be updated to use main instead of master.

Thanks @jasonkarns I updated ref to say main.