Actions cannot be resolved (without logging into github?)

[sparr]

Now that #167 allows us to use the extension without logging into github, and the syntax and language functionality is mostly working without logging in, I notice that all actions give an error similar to "Unable to resolve action actions/checkout@v3, repository or version not found". This despite the "Open action on Github" link still successfully taking me to https://github.com/actions/checkout/tree/v3/
I suspect that the action resolution is still locked behind the login process, although I can't confirm otherwise.