chore: Updated GitHub Actions versions

[jsumners-nr]

This PR updates all of the versions of the various actions we utilize.

1. It solves warnings like:
   
2. It limits our usage of third party actions to specific commits. This is a guard against a potential attack where the action's floating vX tag could be re-pointed to a malicious commit. The only third party actions we "trust" are the actions under the actions/ namespace (i.e. the ones maintained by GitHub directly).
3. There should not be any noticeable change in the outcome of the actions. The deprecation of version of Node used by actions does not affect the version of Node used by jobs.
4. GitHub is already forcing the change behind the scenes https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

A successful run of the main CI workflow with this changes can be seen at https://github.com/newrelic/node-newrelic/actions/runs/9487225943

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.26%. Comparing base (6c964b2) to head (c1cffc7).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2272      +/-   ##
==========================================
- Coverage   96.32%   96.26%   -0.06%     
==========================================
  Files         284      284              
  Lines       45178    45178              
==========================================
- Hits        43518    43491      -27     
- Misses       1660     1687      +27     

Flag	Coverage Δ
integration-tests-16.x	?
integration-tests-18.x	?
integration-tests-20.x	?
unit-tests-16.x	89.17% <ø> (ø)
unit-tests-18.x	89.16% <ø> (ø)
unit-tests-20.x	89.16% <ø> (ø)
versioned-tests-16.x	77.57% <ø> (-0.06%)	⬇️
versioned-tests-18.x	78.56% <ø> (-0.08%)	⬇️
versioned-tests-20.x	78.57% <ø> (-0.08%)	⬇️

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