Update Github Actions to run on Node 16 instead of Node 12 - Bump to @v3

[ThibFrgsGmz]

Originating Project/Creator
Affected Component
Affected Architectures(s)
Related Issue(s)	N/A
Has Unit Tests (y/n)	n
Builds Without Errors (y/n)	See CI outputs
Unit Tests Pass (y/n)	n
Documentation Included (y/n)	n

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Change Description

This PR updates the NodeJS version of GitHub Actions to node16, instead of node12.

Rationale

Node 12 is no longer supported as of 30 Apr 2022, as a result, GitHub has begun the process of deprecating Node 12 for GitHub Actions.

Several of their actions have already migrated, like checkout, upload/download-artifacts.

GitHub asks Actions maintainers to update their actions to work on Node 16 instead of Node 12.

Testing/Review Recommendations

See if the CI is still on.

Future Work

None

[thomas-bc]

LGTM, see nasa/fprime#1804.