Bump github actions/checkout to v4

[Uaitt]

Motivation / Background

This Pull Request has been created because actions/checkout has been bumped to version 4 on the 04/09/2023

Detail

This Pull Request changes all the CI that use actions/checkout@v3 in favour of actions/checkout@v4

Additional information

Checklist

Before submitting the PR make sure the following are checked:

• This Pull Request is related to one change. Changes that are unrelated should be opened in separate PRs.
• Commit message has a detailed description of what changed and why. If this PR fixes a related issue include it in the commit message. Ex: [Fix #issue-number]
• Tests are added or updated if you fix a bug or add a feature.
• CHANGELOG files are updated for the changed libraries if there is a behavior change or additional feature. Minor bug fixes and documentation changes should not be included.