DEVO-1054 - bump to Node 24

[cbalcazarp4585]

Summary of PR changes

https://im-jira.internal.towerswatson.com/browse/DEVO-1054

Updated the GitHub Action to use Node 24 runtime instead of Node 20.

Changes Made

• action.yml: Updated runs.using from node20 to node24 to use the latest Node.js runtime version supported by GitHub Actions.

Reasoning

Node 20 is approaching end-of-life, and Node 24 provides better performance, security updates, and long-term support. This change ensures the action remains compatible with GitHub Actions' supported runtime environments.

PR Requirements

• For major, minor, or breaking changes, at least one of the commit messages contains the appropriate +semver: keywords.
  • See the Incrementing the Version section of the repository's README.md for more details.
  • Recommendation: Use +semver: major or +semver: minor in your commit message, as changing the Node runtime version could be considered a breaking change for environments that haven't migrated to Node 24 yet.
• The action code does not contain sensitive information.

NOTE: If the repo's workflow could not automatically update the README.md, it should be updated manually with the next version. For javascript actions, if the repo's workflow could not automatically recompile the action it should also be updated manually as part of the PR.

[github-actions]

Before this PR can be merged, the following item(s) should be addressed to comply with the action's Contributing Guidelines.

• Please update the action's version in the Usage Examples section of README.md. Each instance of this action should be updated to:
  uses: im-open/process-dotnet-test-results@v3.0.2

[github-actions]

The action's Contributing Guidelines have been met:

• The action's version in the Usage Examples section of README.md has been updated to @v3.0.2
• The action has been recompiled (if needed) by running the build command from the root of the repository

[github-actions]

Before this PR can be merged, the following item(s) should be addressed to comply with the action's Contributing Guidelines.

• Please update the action's version in the Usage Examples section of README.md. Each instance of this action should be updated to:
  uses: im-open/process-dotnet-test-results@v4.0.0

[github-actions]

The action's Contributing Guidelines have been met:

• The action's version in the Usage Examples section of README.md has been updated to @v4.0.0
• The action has been recompiled (if needed) by running the build command from the root of the repository