feat: Strip Yarn from 26+ images

[nschonni]

Description

When update.sh is run on any images for 26+, the Yarn portion of the Dockerfile will be stripped out.

Fixes #2407

Motivation and Context

Testing Details

You can locally change the "26" to "24" or "25" in the condition locally, and see the diff created for those previous images.

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)
• Other (none of the 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.

[MikeMcC399]

I tested it and it looks good! It's a bit simpler than what I suggested.