Update build workflow dependencies

[cerrussell]

#220
In beginning to work on #217 , I noticed the build workflow needs to be updated to run on node16. I see that the electron builder action runs on node12. This action does not appear to be actively maintained (2 years since last update) and nobody has responded to the issue posted in October requesting the action be updated. GH plans for all actions to be migrated to node16 by this summer, so it makes sense to address this issue now before doing any new release pipeline work.

I propose replacing the existing action with this one - it's a fork where the node version is updated. I will preserve pulling from a specific commit rather than using a version tag. The other two actions are also deprecated - setup-node and checkout both need to move up to v3.

[RangerMauve]

This has now been merged. Huge thanks to @cerrussell for figuring it out!