Upgrade action versions
Upgrade action versions

The checkout action[1] has some breaking changes[2], but they should not
affect this use of all default values in a public repo.

Version 2 of the setup-node action[3] should have no breaking
changes[4].

[1] https://github.com/actions/checkout
[2] https://github.com/actions/checkout/blob/main/CHANGELOG.md
[3] https://github.com/actions/setup-node
[4] https://github.com/actions/setup-node/issues/223

joeandaverde/tinypg