CI: Upgrade to a newer version of Node for our SimpleCov action

[kaylareopelle]

Node 16 is deprecated. Similar to #2584, we should update our SimpleCov action to, at a minimum, use Node 20, but preferably, use Node 22 or the latest version whenever this ticket is worked on.

Currently, we have a forked copy of this action living in the .github/actions directory. There may be multiple changes in our fork from the original, but one of the features is the addition of branch coverage percentages in the comments added to PRs after test runs.

We could also consider, as part of this ticket, contributing our changes to the original action or pushing up a fork of our action with our added functionality.

[workato-integration[bot]]

https://new-relic.atlassian.net/browse/NR-262200

[prateeksen]

@kaylareopelle Not only simplecov-report there are other github actions as well for which similar warnings are visible. Few are in this workflow

[kaylareopelle]

Thank you, @prateeksen! We've created issues for all the outdated actions. You can find them under https://github.com/newrelic/newrelic-ruby-agent/labels/ci%20node%20updates

[kaylareopelle]

PR for similar work in csec-ruby-agent: https://github.com/newrelic/csec-ruby-agent/pull/78/files

[prateeksen]

The above mentioned PR has incomplete changes. Please use this as well. https://github.com/newrelic/csec-ruby-agent/pull/79/files

[prateeksen]

Simplecov-report-action is now archived, today. They are suggesting to use: octocov

[kaylareopelle]

Thanks for these updates, @prateeksen!

[hannahramadan]

Simplecov was updated in a previous PR. https://github.com/newrelic/newrelic-ruby-agent/pull/2787/files#diff-c4f51a333bc84a9c03d3cf76e88f242bcda512b4f4d4f93fe566dc3e8a57be31L24