CI: Update .github/actions/issue_closer to a version that uses Node.js 20+

[kaylareopelle]

Our internally-defined .github/actions/issue_closer action runs on Node 16. This adds a deprecation warning annotation to our runs, for example:

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: .github/actions/issue_closer@. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

Update ./github/actions/issue_closer to use Node.js 22 or whatever is the most recent version.

[workato-integration]

https://new-relic.atlassian.net/browse/NR-262231