Update GitHub Actions to versions using Node 20

[lamasfoker]

Github will soon remove Node 16 from the Github Action; see blog post. In this PR, I want to update the actions used in this workflow to the latest version in order to get rid of the warning message on action launches.

[lamasfoker]

@mattxwang I just saw that an identical PR #46 is present. Feel free to close one and merge the other.

[mattxwang]

Thanks for your contribution @lamasfoker, and sorry for the delay! While there's an open PR, it seems like the author is inactive. I will merge this one in instead. Thank you for making your first contribution!

[IbrahimAH]

Thanks for this @lamasfoker. @mattxwang I saw your reply a while back but have just been too smashed at work to get around to it. Thanks for merging it in and closing off my PR, sorry for the delay!

[mattxwang]

Thanks for this @lamasfoker. @mattxwang I saw your reply a while back but have just been too smashed at work to get around to it. Thanks for merging it in and closing off my PR, sorry for the delay!

No worries at all @IbrahimAH - I was also swamped with work, hence my late reply 😓 thank you for opening the PR that kickstarted this process!