Deprecation warning due to Node 16

[Piedone]

Node 16 is now deprecated. Because of this, when using this action, you'll see warnings.

Please update the action to Node 20.

[YanaXu]

Thanks @Piedone . We'll add it to our plan.

[Piedone]

Thank you!

[spkane]

cc/ @manidharanupoju24 (Another action that will need updating when a new Node 20 version is released).