upversion actions/checkout

[KanchiMoe]

Description

A detailed description of your changes.

This PR upversions actions/checkout from v3 to v4 in this repo's Github actions.

Motivation and Context

Explanation of why these changes are being proposed, including any links to other relevant issues or pull requests.

On the Github actions, like here https://github.com/rapid7/recog/actions/runs/8713056113 there are deprecation warnings. v3 of the action used Node.js 16, which is deprecated by Github. v4 changes this to Node.js 20.

For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

How Has This Been Tested?

A clear and concise description of your changes were tested.

• Example of the errors appearing: https://github.com/rapid7/recog/actions/runs/8713056113
• Example of the errors cleared: https://github.com/KanchiMoe/recog/actions/runs/8715782787

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have updated the documentation accordingly (or changes are not required).
• I have added tests to cover my changes (or new tests are not required).
• All new and existing tests passed.