Fix git permissions on Alpine 3.17 docker-entrypoint files

[jnoordsij]

Description

Follow-up to #1813. There Alpine 3.17 was added, but due to me not paying enough attention on my Windows machine, the docker-entrypoint.sh files were actually committed as non-executable in the new image directories.

This ensures all entrypoint scripts have the correct 755 mode again.

Motivation and Context

Fixes builds failing in docker-library/official-images#13716.

Testing Details

Example Output(if appropriate)

Types of changes

• Documentation
• Version change (Update, remove or add more Node.js versions)
• Variant change (Update, remove or add more variants, or versions of variants)
• 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)
• Others (non of above)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING.md document.
• All new and existing tests passed.

[ttshivers]

Thanks for fixing this

[github-actions]

Created PR on the official-images repo (docker-library/official-images#13716). See https://github.com/docker-library/faq#an-images-source-changed-in-git-now-what if you are wondering when it will be available on the Docker Hub.