Update manifest.yml

[iamremo]

buildpack statement is deprecated. Us buildpacks instead.

Description

Motivation and Context

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Docs update
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

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 followed the guidelines in CONTRIBUTING.md, including the required formatting of the commit message

[linux-foundation-easycla]

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[norman-abramovitz]

Closing — stale PR (3+ years). The codebase has diverged significantly. Please reopen against current develop if still relevant.